diff --git a/.clang-format b/.clang-format
index 26b9a5bf4..35ebdbfae 100644
--- a/.clang-format
+++ b/.clang-format
@@ -71,8 +71,20 @@ ForEachMacros:
   - foreach
   - Q_FOREACH
   - BOOST_FOREACH
-IncludeBlocks: Preserve
-IncludeIsMainRegex: '([-_](test|unittest))?$'
+IncludeBlocks: Regroup
+IncludeCategories:
+  - Regex:           '^"' # quoted includes
+    Priority:        1
+  - Regex:           '^<rmm/' # RMM includes
+    Priority:        2
+  - Regex:           '^<(thrust|cub|cuda)/' # CCCL includes
+    Priority:        3
+  - Regex:           '^<(cooperative_groups|cuco|cuda.h|cuda_runtime|device_types|math_constants|nvtx3)' # CUDA includes
+    Priority:        3
+  - Regex:           '^<.*\..*' # other system includes (e.g. with a '.')
+    Priority:        4
+  - Regex:           '^<[^.]+' # STL includes (no '.')
+    Priority:        5
 IndentCaseLabels: true
 IndentPPDirectives: None
 IndentWidth:     2
diff --git a/benchmarks/device_uvector/device_uvector_bench.cu b/benchmarks/device_uvector/device_uvector_bench.cu
index 8b7f9a5ba..36c9183f9 100644
--- a/benchmarks/device_uvector/device_uvector_bench.cu
+++ b/benchmarks/device_uvector/device_uvector_bench.cu
@@ -26,13 +26,12 @@
 #include <rmm/mr/device/per_device_resource.hpp>
 #include <rmm/mr/device/pool_memory_resource.hpp>
 
-#include <benchmark/benchmark.h>
-
 #include <cuda_runtime_api.h>
-
 #include <thrust/device_vector.h>
 #include <thrust/memory.h>
 
+#include <benchmark/benchmark.h>
+
 #include <cstdio>
 #include <type_traits>
 
diff --git a/benchmarks/multi_stream_allocations/multi_stream_allocations_bench.cu b/benchmarks/multi_stream_allocations/multi_stream_allocations_bench.cu
index 4943e507f..d38e89a3b 100644
--- a/benchmarks/multi_stream_allocations/multi_stream_allocations_bench.cu
+++ b/benchmarks/multi_stream_allocations/multi_stream_allocations_bench.cu
@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-#include <benchmarks/utilities/cxxopts.hpp>
-
 #include <rmm/cuda_device.hpp>
 #include <rmm/cuda_stream.hpp>
 #include <rmm/cuda_stream_pool.hpp>
@@ -31,6 +29,7 @@
 #include <cuda_runtime_api.h>
 
 #include <benchmark/benchmark.h>
+#include <benchmarks/utilities/cxxopts.hpp>
 
 #include <cstddef>
 
diff --git a/benchmarks/random_allocations/random_allocations.cpp b/benchmarks/random_allocations/random_allocations.cpp
index 2856cd323..57116743b 100644
--- a/benchmarks/random_allocations/random_allocations.cpp
+++ b/benchmarks/random_allocations/random_allocations.cpp
@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-#include <benchmarks/utilities/cxxopts.hpp>
-
 #include <rmm/cuda_device.hpp>
 #include <rmm/mr/device/arena_memory_resource.hpp>
 #include <rmm/mr/device/binning_memory_resource.hpp>
@@ -26,6 +24,7 @@
 #include <rmm/mr/device/pool_memory_resource.hpp>
 
 #include <benchmark/benchmark.h>
+#include <benchmarks/utilities/cxxopts.hpp>
 
 #include <array>
 #include <cstddef>
diff --git a/benchmarks/replay/replay.cpp b/benchmarks/replay/replay.cpp
index 253708ace..5afed036a 100644
--- a/benchmarks/replay/replay.cpp
+++ b/benchmarks/replay/replay.cpp
@@ -14,10 +14,6 @@
  * limitations under the License.
  */
 
-#include <benchmarks/utilities/cxxopts.hpp>
-#include <benchmarks/utilities/log_parser.hpp>
-#include <benchmarks/utilities/simulated_memory_resource.hpp>
-
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/detail/error.hpp>
 #include <rmm/mr/device/arena_memory_resource.hpp>
@@ -33,7 +29,9 @@
 #include <thrust/reduce.h>
 
 #include <benchmark/benchmark.h>
-
+#include <benchmarks/utilities/cxxopts.hpp>
+#include <benchmarks/utilities/log_parser.hpp>
+#include <benchmarks/utilities/simulated_memory_resource.hpp>
 #include <spdlog/common.h>
 
 #include <atomic>
diff --git a/benchmarks/synchronization/synchronization.hpp b/benchmarks/synchronization/synchronization.hpp
index 1f26beb37..596b3684b 100644
--- a/benchmarks/synchronization/synchronization.hpp
+++ b/benchmarks/synchronization/synchronization.hpp
@@ -61,9 +61,10 @@
 #include <rmm/cuda_stream_view.hpp>
 
 // Google Benchmark library
-#include <benchmark/benchmark.h>
 #include <cuda_runtime_api.h>
 
+#include <benchmark/benchmark.h>
+
 class cuda_event_timer {
  public:
   /**
diff --git a/benchmarks/utilities/log_parser.hpp b/benchmarks/utilities/log_parser.hpp
index bc1aee47c..2283ace93 100644
--- a/benchmarks/utilities/log_parser.hpp
+++ b/benchmarks/utilities/log_parser.hpp
@@ -16,12 +16,12 @@
 
 #pragma once
 
-#include <chrono>
+#include "rapidcsv.h"
+
 #include <rmm/detail/error.hpp>
 #include <rmm/mr/device/device_memory_resource.hpp>
 
-#include "rapidcsv.h"
-
+#include <chrono>
 #include <cstdint>
 #include <iomanip>
 #include <limits>
diff --git a/include/rmm/cuda_stream.hpp b/include/rmm/cuda_stream.hpp
index cb5654ac3..197095c39 100644
--- a/include/rmm/cuda_stream.hpp
+++ b/include/rmm/cuda_stream.hpp
@@ -16,13 +16,13 @@
 
 #pragma once
 
-#include <functional>
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/detail/error.hpp>
 #include <rmm/detail/logging_assert.hpp>
 
 #include <cuda_runtime_api.h>
 
+#include <functional>
 #include <memory>
 
 namespace rmm {
diff --git a/include/rmm/cuda_stream_view.hpp b/include/rmm/cuda_stream_view.hpp
index f8564b16b..a34897df6 100644
--- a/include/rmm/cuda_stream_view.hpp
+++ b/include/rmm/cuda_stream_view.hpp
@@ -18,9 +18,8 @@
 
 #include <rmm/detail/error.hpp>
 
-#include <cuda_runtime_api.h>
-
 #include <cuda/stream_ref>
+#include <cuda_runtime_api.h>
 
 #include <atomic>
 #include <cstddef>
diff --git a/include/rmm/detail/logging_assert.hpp b/include/rmm/detail/logging_assert.hpp
index 321bddab8..7eb667211 100644
--- a/include/rmm/detail/logging_assert.hpp
+++ b/include/rmm/detail/logging_assert.hpp
@@ -20,9 +20,10 @@
 // logger can be extremely expensive to compile, so we want to avoid including
 // it.
 #if !defined(NDEBUG)
-#include <cassert>
 #include <rmm/detail/error.hpp>
 #include <rmm/logger.hpp>
+
+#include <cassert>
 #endif
 
 /**
diff --git a/include/rmm/device_buffer.hpp b/include/rmm/device_buffer.hpp
index 167d07c4b..4663b5733 100644
--- a/include/rmm/device_buffer.hpp
+++ b/include/rmm/device_buffer.hpp
@@ -21,6 +21,7 @@
 #include <rmm/mr/device/per_device_resource.hpp>
 #include <rmm/resource_ref.hpp>
 
+#include <cuda/memory_resource>
 #include <cuda_runtime_api.h>
 
 #include <cassert>
@@ -28,8 +29,6 @@
 #include <stdexcept>
 #include <utility>
 
-#include <cuda/memory_resource>
-
 namespace rmm {
 /**
  * @addtogroup data_containers
diff --git a/include/rmm/device_uvector.hpp b/include/rmm/device_uvector.hpp
index 0750ef796..ff6a7d837 100644
--- a/include/rmm/device_uvector.hpp
+++ b/include/rmm/device_uvector.hpp
@@ -23,11 +23,11 @@
 #include <rmm/mr/device/per_device_resource.hpp>
 #include <rmm/resource_ref.hpp>
 
+#include <cuda/memory_resource>
+
 #include <cstddef>
 #include <vector>
 
-#include <cuda/memory_resource>
-
 namespace rmm {
 /**
  * @addtogroup data_containers
diff --git a/include/rmm/device_vector.hpp b/include/rmm/device_vector.hpp
index 7caf5845b..64fd8b993 100644
--- a/include/rmm/device_vector.hpp
+++ b/include/rmm/device_vector.hpp
@@ -16,9 +16,9 @@
 
 #pragma once
 
+#include <rmm/detail/thrust_namespace.h>
 #include <rmm/mr/device/thrust_allocator_adaptor.hpp>
 
-#include <rmm/detail/thrust_namespace.h>
 #include <thrust/device_vector.h>
 
 namespace rmm {
diff --git a/include/rmm/exec_policy.hpp b/include/rmm/exec_policy.hpp
index 5acd062e3..a343afb8b 100644
--- a/include/rmm/exec_policy.hpp
+++ b/include/rmm/exec_policy.hpp
@@ -22,10 +22,10 @@
 #pragma once
 
 #include <rmm/cuda_stream_view.hpp>
+#include <rmm/detail/thrust_namespace.h>
 #include <rmm/mr/device/thrust_allocator_adaptor.hpp>
 #include <rmm/resource_ref.hpp>
 
-#include <rmm/detail/thrust_namespace.h>
 #include <thrust/system/cuda/execution_policy.h>
 #include <thrust/version.h>
 
diff --git a/include/rmm/mr/device/cuda_async_memory_resource.hpp b/include/rmm/mr/device/cuda_async_memory_resource.hpp
index 69e23624d..1bd761eb2 100644
--- a/include/rmm/mr/device/cuda_async_memory_resource.hpp
+++ b/include/rmm/mr/device/cuda_async_memory_resource.hpp
@@ -19,13 +19,12 @@
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/detail/dynamic_load_runtime.hpp>
 #include <rmm/detail/error.hpp>
+#include <rmm/detail/thrust_namespace.h>
 #include <rmm/mr/device/cuda_async_view_memory_resource.hpp>
 #include <rmm/mr/device/device_memory_resource.hpp>
 
-#include <rmm/detail/thrust_namespace.h>
-#include <thrust/optional.h>
-
 #include <cuda_runtime_api.h>
+#include <thrust/optional.h>
 
 #include <cstddef>
 #include <limits>
diff --git a/include/rmm/mr/device/cuda_async_view_memory_resource.hpp b/include/rmm/mr/device/cuda_async_view_memory_resource.hpp
index 6c24cccc3..c07730f70 100644
--- a/include/rmm/mr/device/cuda_async_view_memory_resource.hpp
+++ b/include/rmm/mr/device/cuda_async_view_memory_resource.hpp
@@ -19,12 +19,11 @@
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/detail/dynamic_load_runtime.hpp>
 #include <rmm/detail/error.hpp>
-#include <rmm/mr/device/device_memory_resource.hpp>
-
 #include <rmm/detail/thrust_namespace.h>
-#include <thrust/optional.h>
+#include <rmm/mr/device/device_memory_resource.hpp>
 
 #include <cuda_runtime_api.h>
+#include <thrust/optional.h>
 
 #include <cstddef>
 #include <limits>
diff --git a/include/rmm/mr/device/cuda_memory_resource.hpp b/include/rmm/mr/device/cuda_memory_resource.hpp
index 0652d6360..16100b06a 100644
--- a/include/rmm/mr/device/cuda_memory_resource.hpp
+++ b/include/rmm/mr/device/cuda_memory_resource.hpp
@@ -15,10 +15,9 @@
  */
 #pragma once
 
-#include <rmm/mr/device/device_memory_resource.hpp>
-
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/detail/error.hpp>
+#include <rmm/mr/device/device_memory_resource.hpp>
 
 #include <cstddef>
 
diff --git a/include/rmm/mr/device/fixed_size_memory_resource.hpp b/include/rmm/mr/device/fixed_size_memory_resource.hpp
index 296ef103c..d34ad8d7e 100644
--- a/include/rmm/mr/device/fixed_size_memory_resource.hpp
+++ b/include/rmm/mr/device/fixed_size_memory_resource.hpp
@@ -19,15 +19,14 @@
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/detail/error.hpp>
 #include <rmm/detail/logging_assert.hpp>
+#include <rmm/detail/thrust_namespace.h>
 #include <rmm/mr/device/detail/fixed_size_free_list.hpp>
 #include <rmm/mr/device/detail/stream_ordered_memory_resource.hpp>
 
-#include <rmm/detail/thrust_namespace.h>
+#include <cuda_runtime_api.h>
 #include <thrust/iterator/counting_iterator.h>
 #include <thrust/iterator/transform_iterator.h>
 
-#include <cuda_runtime_api.h>
-
 #include <algorithm>
 #include <cstddef>
 #include <list>
diff --git a/include/rmm/mr/device/managed_memory_resource.hpp b/include/rmm/mr/device/managed_memory_resource.hpp
index 708adad8e..ea43315de 100644
--- a/include/rmm/mr/device/managed_memory_resource.hpp
+++ b/include/rmm/mr/device/managed_memory_resource.hpp
@@ -15,10 +15,9 @@
  */
 #pragma once
 
-#include <rmm/mr/device/device_memory_resource.hpp>
-
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/detail/error.hpp>
+#include <rmm/mr/device/device_memory_resource.hpp>
 
 #include <cstddef>
 
diff --git a/include/rmm/mr/device/pool_memory_resource.hpp b/include/rmm/mr/device/pool_memory_resource.hpp
index 5f70e73d1..4f2d46a7c 100644
--- a/include/rmm/mr/device/pool_memory_resource.hpp
+++ b/include/rmm/mr/device/pool_memory_resource.hpp
@@ -19,20 +19,19 @@
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/detail/error.hpp>
 #include <rmm/detail/logging_assert.hpp>
+#include <rmm/detail/thrust_namespace.h>
 #include <rmm/logger.hpp>
 #include <rmm/mr/device/detail/coalescing_free_list.hpp>
 #include <rmm/mr/device/detail/stream_ordered_memory_resource.hpp>
 #include <rmm/mr/device/device_memory_resource.hpp>
 
-#include <rmm/detail/thrust_namespace.h>
+#include <cuda_runtime_api.h>
 #include <thrust/iterator/counting_iterator.h>
 #include <thrust/iterator/transform_iterator.h>
 #include <thrust/optional.h>
 
 #include <fmt/core.h>
 
-#include <cuda_runtime_api.h>
-
 #include <algorithm>
 #include <cstddef>
 #include <iostream>
diff --git a/include/rmm/mr/device/thrust_allocator_adaptor.hpp b/include/rmm/mr/device/thrust_allocator_adaptor.hpp
index ece495c37..f2b1a6027 100644
--- a/include/rmm/mr/device/thrust_allocator_adaptor.hpp
+++ b/include/rmm/mr/device/thrust_allocator_adaptor.hpp
@@ -16,16 +16,15 @@
 
 #pragma once
 
+#include <rmm/detail/thrust_namespace.h>
 #include <rmm/mr/device/per_device_resource.hpp>
 #include <rmm/resource_ref.hpp>
 
-#include <rmm/detail/thrust_namespace.h>
+#include <cuda/memory_resource>
 #include <thrust/device_malloc_allocator.h>
 #include <thrust/device_ptr.h>
 #include <thrust/memory.h>
 
-#include <cuda/memory_resource>
-
 namespace rmm::mr {
 /**
  * @addtogroup device_resource_adaptors
diff --git a/include/rmm/mr/host/new_delete_resource.hpp b/include/rmm/mr/host/new_delete_resource.hpp
index ccb294d21..a48f61447 100644
--- a/include/rmm/mr/host/new_delete_resource.hpp
+++ b/include/rmm/mr/host/new_delete_resource.hpp
@@ -15,10 +15,9 @@
  */
 #pragma once
 
-#include <rmm/mr/host/host_memory_resource.hpp>
-
 #include <rmm/aligned.hpp>
 #include <rmm/detail/aligned.hpp>
+#include <rmm/mr/host/host_memory_resource.hpp>
 
 #include <cstddef>
 #include <utility>
diff --git a/include/rmm/mr/pinned_host_memory_resource.hpp b/include/rmm/mr/pinned_host_memory_resource.hpp
index e92b2985e..ee409dbac 100644
--- a/include/rmm/mr/pinned_host_memory_resource.hpp
+++ b/include/rmm/mr/pinned_host_memory_resource.hpp
@@ -21,7 +21,6 @@
 
 #include <cuda/memory_resource>
 #include <cuda/stream_ref>
-
 #include <cuda_runtime_api.h>
 
 #include <cstddef>
diff --git a/include/rmm/thrust_rmm_allocator.h b/include/rmm/thrust_rmm_allocator.h
index 0b78d5497..ad71e107a 100644
--- a/include/rmm/thrust_rmm_allocator.h
+++ b/include/rmm/thrust_rmm_allocator.h
@@ -17,10 +17,10 @@
 #pragma once
 
 #include <rmm/cuda_stream_view.hpp>
+#include <rmm/detail/thrust_namespace.h>
 #include <rmm/device_vector.hpp>
 #include <rmm/mr/device/thrust_allocator_adaptor.hpp>
 
-#include <rmm/detail/thrust_namespace.h>
 #include <thrust/execution_policy.h>
 
 namespace rmm {
diff --git a/python/rmm/_lib/_torch_allocator.cpp b/python/rmm/_lib/_torch_allocator.cpp
index 5e5b2dcb4..dc92e4639 100644
--- a/python/rmm/_lib/_torch_allocator.cpp
+++ b/python/rmm/_lib/_torch_allocator.cpp
@@ -14,12 +14,12 @@
  * limitations under the License.
  */
 
-#include <cuda_runtime_api.h>
-
 #include <rmm/cuda_device.hpp>
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/mr/device/per_device_resource.hpp>
 
+#include <cuda_runtime_api.h>
+
 // These signatures must match those required by CUDAPluggableAllocator in
 // github.com/pytorch/pytorch/blob/main/torch/csrc/cuda/CUDAPluggableAllocator.h
 // Since the loading is done at runtime via dlopen, no error checking
diff --git a/tests/cuda_stream_pool_tests.cpp b/tests/cuda_stream_pool_tests.cpp
index de17f8c3c..ad1d421d7 100644
--- a/tests/cuda_stream_pool_tests.cpp
+++ b/tests/cuda_stream_pool_tests.cpp
@@ -18,10 +18,10 @@
 #include <rmm/detail/error.hpp>
 #include <rmm/device_uvector.hpp>
 
-#include <gtest/gtest.h>
-
 #include <cuda_runtime_api.h>
 
+#include <gtest/gtest.h>
+
 struct CudaStreamPoolTest : public ::testing::Test {
   rmm::cuda_stream_pool pool{};
 };
diff --git a/tests/cuda_stream_tests.cpp b/tests/cuda_stream_tests.cpp
index 465e5d4c5..1cc068434 100644
--- a/tests/cuda_stream_tests.cpp
+++ b/tests/cuda_stream_tests.cpp
@@ -17,13 +17,14 @@
 #include <rmm/cuda_stream.hpp>
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/device_buffer.hpp>
-#include <sstream>
 
 #include <cuda_runtime_api.h>
 
 #include <gtest/gtest-death-test.h>
 #include <gtest/gtest.h>
 
+#include <sstream>
+
 struct CudaStreamTest : public ::testing::Test {};
 
 TEST_F(CudaStreamTest, Equality)
diff --git a/tests/device_scalar_tests.cpp b/tests/device_scalar_tests.cpp
index 5a7825533..6f80a5de1 100644
--- a/tests/device_scalar_tests.cpp
+++ b/tests/device_scalar_tests.cpp
@@ -14,17 +14,16 @@
  * limitations under the License.
  */
 
-#include <gtest/gtest.h>
-
 #include <rmm/cuda_stream.hpp>
 #include <rmm/device_scalar.hpp>
 #include <rmm/mr/device/device_memory_resource.hpp>
 #include <rmm/mr/device/per_device_resource.hpp>
 #include <rmm/resource_ref.hpp>
 
+#include <cuda/memory_resource>
 #include <cuda_runtime_api.h>
 
-#include <cuda/memory_resource>
+#include <gtest/gtest.h>
 
 #include <chrono>
 #include <cstddef>
diff --git a/tests/logger_tests.cpp b/tests/logger_tests.cpp
index f6531bc59..5e3b2f899 100644
--- a/tests/logger_tests.cpp
+++ b/tests/logger_tests.cpp
@@ -15,11 +15,11 @@
  */
 
 #include "./byte_literals.hpp"
-#include <benchmarks/utilities/log_parser.hpp>
 
 #include <rmm/mr/device/cuda_memory_resource.hpp>
 #include <rmm/mr/device/logging_resource_adaptor.hpp>
 
+#include <benchmarks/utilities/log_parser.hpp>
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
diff --git a/tests/mr/device/arena_mr_tests.cpp b/tests/mr/device/arena_mr_tests.cpp
index c8c60f7fb..1eb38888e 100644
--- a/tests/mr/device/arena_mr_tests.cpp
+++ b/tests/mr/device/arena_mr_tests.cpp
@@ -26,10 +26,9 @@
 
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
-
-#include <memory>
 #include <sys/stat.h>
 
+#include <memory>
 #include <thread>
 #include <vector>
 
diff --git a/tests/mr/device/callback_mr_tests.cpp b/tests/mr/device/callback_mr_tests.cpp
index 95dac93ec..34a2cc8cc 100644
--- a/tests/mr/device/callback_mr_tests.cpp
+++ b/tests/mr/device/callback_mr_tests.cpp
@@ -16,19 +16,19 @@
 
 #include "../../byte_literals.hpp"
 #include "../../mock_resource.hpp"
+
 #include <rmm/cuda_stream_view.hpp>
 #include <rmm/detail/error.hpp>
 #include <rmm/device_buffer.hpp>
 #include <rmm/mr/device/callback_memory_resource.hpp>
 #include <rmm/mr/device/device_memory_resource.hpp>
 
-#include <cstddef>
-
 #include <fmt/core.h>
-
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
+#include <cstddef>
+
 namespace rmm::test {
 namespace {
 
diff --git a/tests/mr/device/mr_ref_multithreaded_tests.cpp b/tests/mr/device/mr_ref_multithreaded_tests.cpp
index 352a9fa16..d0d11ccbe 100644
--- a/tests/mr/device/mr_ref_multithreaded_tests.cpp
+++ b/tests/mr/device/mr_ref_multithreaded_tests.cpp
@@ -16,8 +16,6 @@
 
 #include "mr_ref_test.hpp"
 
-#include <gtest/gtest.h>
-
 #include <rmm/cuda_stream.hpp>
 #include <rmm/mr/device/arena_memory_resource.hpp>
 #include <rmm/mr/device/cuda_memory_resource.hpp>
@@ -27,6 +25,8 @@
 
 #include <cuda/memory_resource>
 
+#include <gtest/gtest.h>
+
 #include <thread>
 #include <vector>
 
diff --git a/tests/mr/device/mr_ref_test.hpp b/tests/mr/device/mr_ref_test.hpp
index 0beea8656..a8a6226f1 100644
--- a/tests/mr/device/mr_ref_test.hpp
+++ b/tests/mr/device/mr_ref_test.hpp
@@ -36,10 +36,10 @@
 #include <rmm/mr/pinned_host_memory_resource.hpp>
 #include <rmm/resource_ref.hpp>
 
-#include <gtest/gtest.h>
-
 #include <cuda/memory_resource>
 
+#include <gtest/gtest.h>
+
 #include <cstddef>
 #include <cstdint>
 #include <functional>
diff --git a/tests/mr/device/polymorphic_allocator_tests.cpp b/tests/mr/device/polymorphic_allocator_tests.cpp
index 4c8346730..3b73d4a49 100644
--- a/tests/mr/device/polymorphic_allocator_tests.cpp
+++ b/tests/mr/device/polymorphic_allocator_tests.cpp
@@ -14,15 +14,16 @@
  * limitations under the License.
  */
 
-#include <memory>
-
-#include <gtest/gtest.h>
 #include <rmm/cuda_stream.hpp>
 #include <rmm/mr/device/cuda_memory_resource.hpp>
 #include <rmm/mr/device/managed_memory_resource.hpp>
 #include <rmm/mr/device/per_device_resource.hpp>
 #include <rmm/mr/device/polymorphic_allocator.hpp>
 
+#include <gtest/gtest.h>
+
+#include <memory>
+
 namespace {
 
 struct allocator_test : public ::testing::Test {
diff --git a/tests/mr/device/thrust_allocator_tests.cu b/tests/mr/device/thrust_allocator_tests.cu
index cabfe9661..ed66c220c 100644
--- a/tests/mr/device/thrust_allocator_tests.cu
+++ b/tests/mr/device/thrust_allocator_tests.cu
@@ -22,10 +22,10 @@
 #include <rmm/mr/device/thrust_allocator_adaptor.hpp>
 #include <rmm/resource_ref.hpp>
 
-#include <gtest/gtest.h>
-
 #include <thrust/reduce.h>
 
+#include <gtest/gtest.h>
+
 // explicit instantiation for test coverage purposes
 template class rmm::mr::thrust_allocator<int>;
 
diff --git a/tests/mr/device/tracking_mr_tests.cpp b/tests/mr/device/tracking_mr_tests.cpp
index 2af720d3f..65d2f955c 100644
--- a/tests/mr/device/tracking_mr_tests.cpp
+++ b/tests/mr/device/tracking_mr_tests.cpp
@@ -23,7 +23,6 @@
 #include <rmm/mr/device/tracking_resource_adaptor.hpp>
 
 #include <gtest/gtest.h>
-
 #include <spdlog/sinks/ostream_sink.h>
 
 namespace rmm::test {
diff --git a/tests/mr/host/mr_ref_tests.cpp b/tests/mr/host/mr_ref_tests.cpp
index 416641f18..49b5bf061 100644
--- a/tests/mr/host/mr_ref_tests.cpp
+++ b/tests/mr/host/mr_ref_tests.cpp
@@ -21,9 +21,8 @@
 #include <rmm/mr/host/new_delete_resource.hpp>
 #include <rmm/mr/host/pinned_memory_resource.hpp>
 
-#include <cuda_runtime_api.h>
-
 #include <cuda/memory_resource>
+#include <cuda_runtime_api.h>
 
 #include <gtest/gtest.h>