diff --git a/rust/datafusion/src/logical_plan/mod.rs b/rust/datafusion/src/logical_plan/mod.rs
index d927a61c23d2e..ed21ca8b8d51a 100644
--- a/rust/datafusion/src/logical_plan/mod.rs
+++ b/rust/datafusion/src/logical_plan/mod.rs
@@ -21,18 +21,13 @@
 //! Logical query plans can then be optimized and executed directly, or translated into
 //! physical query plans and executed.
 
-use std::collections::HashSet;
-
-use crate::error::Result;
-use crate::physical_plan::udaf::AggregateUDF;
-use crate::physical_plan::udf::ScalarUDF;
-
 mod builder;
 mod display;
 mod expr;
 mod extension;
 mod operators;
 mod plan;
+mod registry;
 
 pub use builder::LogicalPlanBuilder;
 pub use display::display_schema;
@@ -43,15 +38,4 @@ pub use expr::{
 pub use extension::UserDefinedLogicalNode;
 pub use operators::Operator;
 pub use plan::{LogicalPlan, PlanType, PlanVisitor, StringifiedPlan, TableSource};
-
-/// A registry knows how to build logical expressions out of user-defined function' names
-pub trait FunctionRegistry {
-    /// Set of all available udfs.
-    fn udfs(&self) -> HashSet<String>;
-
-    /// Returns a reference to the udf named `name`.
-    fn udf(&self, name: &str) -> Result<&ScalarUDF>;
-
-    /// Returns a reference to the udaf named `name`.
-    fn udaf(&self, name: &str) -> Result<&AggregateUDF>;
-}
+pub use registry::FunctionRegistry;
diff --git a/rust/datafusion/src/logical_plan/registry.rs b/rust/datafusion/src/logical_plan/registry.rs
new file mode 100644
index 0000000000000..c115048782307
--- /dev/null
+++ b/rust/datafusion/src/logical_plan/registry.rs
@@ -0,0 +1,34 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+use std::collections::HashSet;
+
+use crate::error::Result;
+use crate::physical_plan::udaf::AggregateUDF;
+use crate::physical_plan::udf::ScalarUDF;
+
+/// A registry knows how to build logical expressions out of user-defined function' names
+pub trait FunctionRegistry {
+    /// Set of all available udfs.
+    fn udfs(&self) -> HashSet<String>;
+
+    /// Returns a reference to the udf named `name`.
+    fn udf(&self, name: &str) -> Result<&ScalarUDF>;
+
+    /// Returns a reference to the udaf named `name`.
+    fn udaf(&self, name: &str) -> Result<&AggregateUDF>;
+}