diff --git a/shell/platform/windows/flutter_window_win32.cc b/shell/platform/windows/flutter_window_win32.cc
index 064eb711b2aa0..31d551a59a8b4 100644
--- a/shell/platform/windows/flutter_window_win32.cc
+++ b/shell/platform/windows/flutter_window_win32.cc
@@ -232,6 +232,10 @@ void FlutterWindowWin32::OnCursorRectUpdated(const Rect& rect) {
   UpdateCursorRect(Rect(origin, size));
 }
 
+void FlutterWindowWin32::OnResetImeComposing() {
+  AbortImeComposing();
+}
+
 bool FlutterWindowWin32::OnBitmapSurfaceUpdated(const void* allocation,
                                                 size_t row_bytes,
                                                 size_t height) {
diff --git a/shell/platform/windows/flutter_window_win32.h b/shell/platform/windows/flutter_window_win32.h
index 86969749d21a2..f1f13f37d8e41 100644
--- a/shell/platform/windows/flutter_window_win32.h
+++ b/shell/platform/windows/flutter_window_win32.h
@@ -89,6 +89,9 @@ class FlutterWindowWin32 : public WindowWin32, public WindowBindingHandler {
   // |FlutterWindowBindingHandler|
   void OnCursorRectUpdated(const Rect& rect) override;
 
+  // |FlutterWindowBindingHandler|
+  void OnResetImeComposing() override;
+
   // |WindowWin32|
   void OnScroll(double delta_x,
                 double delta_y,
diff --git a/shell/platform/windows/flutter_window_win32_unittests.cc b/shell/platform/windows/flutter_window_win32_unittests.cc
index 84af45a610946..a5e6683ce5c1f 100644
--- a/shell/platform/windows/flutter_window_win32_unittests.cc
+++ b/shell/platform/windows/flutter_window_win32_unittests.cc
@@ -100,6 +100,7 @@ class SpyTextInputPlugin : public KeyboardHandlerBase,
                void(const std::u16string& text, int cursor_pos));
 
   virtual void OnCursorRectUpdated(const Rect& rect) {}
+  virtual void OnResetImeComposing() {}
 
  private:
   std::unique_ptr<TextInputPlugin> real_implementation_;
@@ -155,6 +156,7 @@ class MockFlutterWindowWin32 : public FlutterWindowWin32,
   MOCK_METHOD0(GetDpiScale, float());
   MOCK_METHOD0(IsVisible, bool());
   MOCK_METHOD1(UpdateCursorRect, void(const Rect&));
+  MOCK_METHOD0(OnResetImeComposing, void());
 
  protected:
   virtual BOOL Win32PeekMessage(LPMSG lpMsg,
diff --git a/shell/platform/windows/flutter_window_winuwp.cc b/shell/platform/windows/flutter_window_winuwp.cc
index 29781837fd8ee..d8f7b55fb67e0 100644
--- a/shell/platform/windows/flutter_window_winuwp.cc
+++ b/shell/platform/windows/flutter_window_winuwp.cc
@@ -133,6 +133,11 @@ void FlutterWindowWinUWP::OnCursorRectUpdated(const Rect& rect) {
   // TODO(cbracken): Implement IMM candidate window positioning.
 }
 
+void FlutterWindowWinUWP::OnResetImeComposing() {
+  // TODO(cbracken): Cancel composing, close the candidates view, and clear the
+  // composing text.
+}
+
 void FlutterWindowWinUWP::OnWindowResized() {}
 
 FlutterWindowWinUWP::~FlutterWindowWinUWP() {}
diff --git a/shell/platform/windows/flutter_window_winuwp.h b/shell/platform/windows/flutter_window_winuwp.h
index 235caf409fec0..39a3eaa29fd19 100644
--- a/shell/platform/windows/flutter_window_winuwp.h
+++ b/shell/platform/windows/flutter_window_winuwp.h
@@ -55,6 +55,9 @@ class FlutterWindowWinUWP : public WindowBindingHandler {
   // |WindowBindingHandler|
   void OnCursorRectUpdated(const Rect& rect) override;
 
+  // |FlutterWindowBindingHandler|
+  void OnResetImeComposing() override;
+
   // |WindowBindingHandler|
   void OnWindowResized() override;
 
diff --git a/shell/platform/windows/flutter_windows_view.cc b/shell/platform/windows/flutter_windows_view.cc
index 268fa29606387..35cb908bebf9a 100644
--- a/shell/platform/windows/flutter_windows_view.cc
+++ b/shell/platform/windows/flutter_windows_view.cc
@@ -252,6 +252,10 @@ void FlutterWindowsView::OnCursorRectUpdated(const Rect& rect) {
   binding_handler_->OnCursorRectUpdated(rect);
 }
 
+void FlutterWindowsView::OnResetImeComposing() {
+  binding_handler_->OnResetImeComposing();
+}
+
 void FlutterWindowsView::InitializeKeyboard() {
   auto internal_plugin_messenger = internal_plugin_registrar_->messenger();
 #ifdef WINUWP
diff --git a/shell/platform/windows/flutter_windows_view.h b/shell/platform/windows/flutter_windows_view.h
index 2fc4a83af7219..1dd820d81529a 100644
--- a/shell/platform/windows/flutter_windows_view.h
+++ b/shell/platform/windows/flutter_windows_view.h
@@ -161,6 +161,9 @@ class FlutterWindowsView : public WindowBindingHandlerDelegate,
   // |TextInputPluginDelegate|
   void OnCursorRectUpdated(const Rect& rect) override;
 
+  // |TextInputPluginDelegate|
+  void OnResetImeComposing() override;
+
  protected:
   // Called to create the keyboard hook handlers.
   //
diff --git a/shell/platform/windows/testing/mock_window_binding_handler.h b/shell/platform/windows/testing/mock_window_binding_handler.h
index c6be8e18c8089..a5395c96cca02 100644
--- a/shell/platform/windows/testing/mock_window_binding_handler.h
+++ b/shell/platform/windows/testing/mock_window_binding_handler.h
@@ -1,42 +1,43 @@
-// Copyright 2013 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef FLUTTER_SHELL_PLATFORM_WINDOWS_TESTING_MOCK_WINDOW_BINDING_HANDLER_H_
-#define FLUTTER_SHELL_PLATFORM_WINDOWS_TESTING_MOCK_WINDOW_BINDING_HANDLER_H_
-
-#include <windowsx.h>
-
-#include "flutter/shell/platform/windows/window_binding_handler.h"
-#include "gmock/gmock.h"
-
-namespace flutter {
-namespace testing {
-
-/// Mock for the |WindowWin32| base class.
-class MockWindowBindingHandler : public WindowBindingHandler {
- public:
-  MockWindowBindingHandler();
-  virtual ~MockWindowBindingHandler();
-
-  // Prevent copying.
-  MockWindowBindingHandler(MockWindowBindingHandler const&) = delete;
-  MockWindowBindingHandler& operator=(MockWindowBindingHandler const&) = delete;
-
-  MOCK_METHOD1(SetView, void(WindowBindingHandlerDelegate* view));
-  MOCK_METHOD0(GetRenderTarget, WindowsRenderTarget());
-  MOCK_METHOD0(GetPlatformWindow, PlatformWindow());
-  MOCK_METHOD0(GetDpiScale, float());
-  MOCK_METHOD0(IsVisible, bool());
-  MOCK_METHOD0(OnWindowResized, void());
-  MOCK_METHOD0(GetPhysicalWindowBounds, PhysicalWindowBounds());
-  MOCK_METHOD1(UpdateFlutterCursor, void(const std::string& cursor_name));
-  MOCK_METHOD1(OnCursorRectUpdated, void(const Rect& rect));
-  MOCK_METHOD3(OnBitmapSurfaceUpdated,
-               bool(const void* allocation, size_t row_bytes, size_t height));
-};
-
-}  // namespace testing
-}  // namespace flutter
-
-#endif  // FLUTTER_SHELL_PLATFORM_WINDOWS_TESTING_MOCK_WINDOW_BINDING_HANDLER_H_
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef FLUTTER_SHELL_PLATFORM_WINDOWS_TESTING_MOCK_WINDOW_BINDING_HANDLER_H_
+#define FLUTTER_SHELL_PLATFORM_WINDOWS_TESTING_MOCK_WINDOW_BINDING_HANDLER_H_
+
+#include <windowsx.h>
+
+#include "flutter/shell/platform/windows/window_binding_handler.h"
+#include "gmock/gmock.h"
+
+namespace flutter {
+namespace testing {
+
+/// Mock for the |WindowWin32| base class.
+class MockWindowBindingHandler : public WindowBindingHandler {
+ public:
+  MockWindowBindingHandler();
+  virtual ~MockWindowBindingHandler();
+
+  // Prevent copying.
+  MockWindowBindingHandler(MockWindowBindingHandler const&) = delete;
+  MockWindowBindingHandler& operator=(MockWindowBindingHandler const&) = delete;
+
+  MOCK_METHOD1(SetView, void(WindowBindingHandlerDelegate* view));
+  MOCK_METHOD0(GetRenderTarget, WindowsRenderTarget());
+  MOCK_METHOD0(GetPlatformWindow, PlatformWindow());
+  MOCK_METHOD0(GetDpiScale, float());
+  MOCK_METHOD0(IsVisible, bool());
+  MOCK_METHOD0(OnWindowResized, void());
+  MOCK_METHOD0(GetPhysicalWindowBounds, PhysicalWindowBounds());
+  MOCK_METHOD1(UpdateFlutterCursor, void(const std::string& cursor_name));
+  MOCK_METHOD1(OnCursorRectUpdated, void(const Rect& rect));
+  MOCK_METHOD0(OnResetImeComposing, void());
+  MOCK_METHOD3(OnBitmapSurfaceUpdated,
+               bool(const void* allocation, size_t row_bytes, size_t height));
+};
+
+}  // namespace testing
+}  // namespace flutter
+
+#endif  // FLUTTER_SHELL_PLATFORM_WINDOWS_TESTING_MOCK_WINDOW_BINDING_HANDLER_H_
diff --git a/shell/platform/windows/text_input_manager_win32.cc b/shell/platform/windows/text_input_manager_win32.cc
index 7c0ed0850e212..c630666103477 100644
--- a/shell/platform/windows/text_input_manager_win32.cc
+++ b/shell/platform/windows/text_input_manager_win32.cc
@@ -128,6 +128,21 @@ std::optional<std::u16string> TextInputManagerWin32::GetResultString() const {
   return GetString(GCS_RESULTSTR);
 }
 
+void TextInputManagerWin32::AbortComposing() {
+  ImmContext imm_context(window_handle_);
+  if (imm_context.IsValid()) {
+      // Cancel composing and close the candidates window.
+    ::ImmNotifyIME(imm_context.get(), NI_COMPOSITIONSTR, CPS_CANCEL, 0);
+    ::ImmNotifyIME(imm_context.get(), NI_CLOSECANDIDATE, 0, 0);
+
+    // Clear the composing string.
+    wchar_t completion_str[] = L"";
+    wchar_t reading_str[] = L"";
+    ::ImmSetCompositionStringW(imm_context.get(), SCS_SETSTR, completion_str,
+                               sizeof(wchar_t), reading_str, sizeof(wchar_t));
+  }
+}
+
 std::optional<std::u16string> TextInputManagerWin32::GetString(int type) const {
   if (window_handle_ == nullptr || !ime_active_) {
     return std::nullopt;
diff --git a/shell/platform/windows/text_input_manager_win32.h b/shell/platform/windows/text_input_manager_win32.h
index d7c0319412edf..0565efb92c38e 100644
--- a/shell/platform/windows/text_input_manager_win32.h
+++ b/shell/platform/windows/text_input_manager_win32.h
@@ -77,6 +77,12 @@ class TextInputManagerWin32 {
   // be committed in the composing region when composition is ended.
   std::optional<std::u16string> GetResultString() const;
 
+  /// Aborts IME composing.
+  ///
+  /// Aborts composing, closes the candidates window, and clears the contents
+  /// of the composing string.
+  void AbortComposing();
+
  private:
   // Returns either the composing string or result string based on the value of
   // the |type| parameter.
diff --git a/shell/platform/windows/text_input_plugin.cc b/shell/platform/windows/text_input_plugin.cc
index f898b30b813c6..db27e4f7a233e 100644
--- a/shell/platform/windows/text_input_plugin.cc
+++ b/shell/platform/windows/text_input_plugin.cc
@@ -7,7 +7,6 @@
 #include <windows.h>
 
 #include <cstdint>
-#include <iostream>
 
 #include "flutter/shell/platform/common/json_method_codec.h"
 #include "flutter/shell/platform/windows/flutter_windows_view.h"
@@ -148,6 +147,7 @@ void TextInputPlugin::HandleMethodCall(
   if (method.compare(kShowMethod) == 0 || method.compare(kHideMethod) == 0) {
     // These methods are no-ops.
   } else if (method.compare(kClearClientMethod) == 0) {
+    delegate_->OnResetImeComposing();
     active_model_ = nullptr;
   } else if (method.compare(kSetClientMethod) == 0) {
     if (!method_call.arguments() || method_call.arguments()->IsNull()) {
diff --git a/shell/platform/windows/text_input_plugin_delegate.h b/shell/platform/windows/text_input_plugin_delegate.h
index 3975f3a0f342f..0d41ff4bdc3a0 100644
--- a/shell/platform/windows/text_input_plugin_delegate.h
+++ b/shell/platform/windows/text_input_plugin_delegate.h
@@ -15,6 +15,9 @@ class TextInputPluginDelegate {
   // Notifies the delegate of the updated the cursor rect in Flutter root view
   // coordinates.
   virtual void OnCursorRectUpdated(const Rect& rect) = 0;
+
+  // Notifies the delegate that the system IME composing state should be reset.
+  virtual void OnResetImeComposing() = 0;
 };
 
 }  // namespace flutter
diff --git a/shell/platform/windows/text_input_plugin_unittest.cc b/shell/platform/windows/text_input_plugin_unittest.cc
index aac581e50b4f3..c587c670dc0d0 100644
--- a/shell/platform/windows/text_input_plugin_unittest.cc
+++ b/shell/platform/windows/text_input_plugin_unittest.cc
@@ -7,6 +7,7 @@
 #include <memory>
 
 #include "flutter/shell/platform/common/json_message_codec.h"
+#include "flutter/shell/platform/common/json_method_codec.h"
 #include "flutter/shell/platform/windows/flutter_windows_view.h"
 #include "flutter/shell/platform/windows/testing/test_binary_messenger.h"
 #include "gmock/gmock.h"
@@ -30,8 +31,10 @@ static std::unique_ptr<std::vector<uint8_t>> CreateResponse(bool handled) {
 
 class EmptyTextInputPluginDelegate : public TextInputPluginDelegate {
  public:
-  // Notifies delegate that the cursor position has changed.
-  void OnCursorRectUpdated(const Rect& rect) {}
+  void OnCursorRectUpdated(const Rect& rect) override {}
+  void OnResetImeComposing() override { ime_was_reset = true; }
+
+  bool ime_was_reset = false;
 };
 }  // namespace
 
@@ -59,5 +62,21 @@ TEST(TextInputPluginTest, TextMethodsWorksWithEmptyModel) {
   // Passes if it did not crash
 }
 
+TEST(TextInputPluginTest, ClearClientResetsComposing) {
+  TestBinaryMessenger messenger([](const std::string& channel,
+                                   const uint8_t* message, size_t message_size,
+                                   BinaryReply reply) {});
+  BinaryReply reply_handler = [](const uint8_t* reply, size_t reply_size) {};
+
+  EmptyTextInputPluginDelegate delegate;
+  TextInputPlugin handler(&messenger, &delegate);
+
+  auto& codec = JsonMethodCodec::GetInstance();
+  auto message = codec.EncodeMethodCall({"TextInput.clearClient", nullptr});
+  messenger.SimulateEngineMessage("flutter/textinput", message->data(),
+                                  message->size(), reply_handler);
+  EXPECT_TRUE(delegate.ime_was_reset);
+}
+
 }  // namespace testing
 }  // namespace flutter
diff --git a/shell/platform/windows/window_binding_handler.h b/shell/platform/windows/window_binding_handler.h
index 60f93ca8aee66..6f310217aa890 100644
--- a/shell/platform/windows/window_binding_handler.h
+++ b/shell/platform/windows/window_binding_handler.h
@@ -91,6 +91,10 @@ class WindowBindingHandler {
   virtual bool OnBitmapSurfaceUpdated(const void* allocation,
                                       size_t row_bytes,
                                       size_t height) = 0;
+
+  // Invoked when the app ends IME composing, such when the active text input
+  // client is cleared.
+  virtual void OnResetImeComposing() = 0;
 };
 
 }  // namespace flutter
diff --git a/shell/platform/windows/window_win32.cc b/shell/platform/windows/window_win32.cc
index 20f7ebbc49acc..7240463fbcae8 100644
--- a/shell/platform/windows/window_win32.cc
+++ b/shell/platform/windows/window_win32.cc
@@ -195,6 +195,10 @@ void WindowWin32::OnImeRequest(UINT const message,
   // https://github.com/flutter/flutter/issues/74547
 }
 
+void WindowWin32::AbortImeComposing() {
+  text_input_manager_.AbortComposing();
+}
+
 void WindowWin32::UpdateCursorRect(const Rect& rect) {
   text_input_manager_.UpdateCaretRect(rect);
 }
diff --git a/shell/platform/windows/window_win32.h b/shell/platform/windows/window_win32.h
index 4e14faa4680c8..3607faf820231 100644
--- a/shell/platform/windows/window_win32.h
+++ b/shell/platform/windows/window_win32.h
@@ -161,6 +161,10 @@ class WindowWin32 {
                     WPARAM const wparam,
                     LPARAM const lparam);
 
+  // Called when the app ends IME composing, such as when the text input client
+  // is cleared or changed.
+  virtual void AbortImeComposing();
+
   // Called when the cursor rect has been updated.
   //
   // |rect| is in Win32 window coordinates.