diff --git a/ui/CMakeLists.txt b/ui/CMakeLists.txt
index b4db60cf..7384bb8e 100644
--- a/ui/CMakeLists.txt
+++ b/ui/CMakeLists.txt
@@ -74,6 +74,8 @@ add_executable(msimeui-demo WIN32
     demos/msimeui-demo/DemoScene.cpp
     demos/msimeui-demo/DemoScene.h
     demos/msimeui-demo/main.cpp
+    demos/msimeui-demo/msimeui-demo.rc
+    demos/msimeui-demo/resource.h
 )
 
 target_link_libraries(msimeui-demo PRIVATE msimeui)
diff --git a/ui/assets/msimeui.ico b/ui/assets/msimeui.ico
new file mode 100644
index 00000000..c199547d
Binary files /dev/null and b/ui/assets/msimeui.ico differ
diff --git a/ui/demos/msimeui-demo/msimeui-demo.rc b/ui/demos/msimeui-demo/msimeui-demo.rc
new file mode 100644
index 00000000..41ae81e8
--- /dev/null
+++ b/ui/demos/msimeui-demo/msimeui-demo.rc
@@ -0,0 +1,3 @@
+#include "resource.h"
+
+IDI_MSIMEUI_ICON ICON "../../assets/msimeui.ico"
diff --git a/ui/demos/msimeui-demo/resource.h b/ui/demos/msimeui-demo/resource.h
new file mode 100644
index 00000000..b132b872
--- /dev/null
+++ b/ui/demos/msimeui-demo/resource.h
@@ -0,0 +1,3 @@
+#pragma once
+
+#define IDI_MSIMEUI_ICON 101
diff --git a/ui/src/Window.cpp b/ui/src/Window.cpp
index 33cc9393..8792104b 100644
--- a/ui/src/Window.cpp
+++ b/ui/src/Window.cpp
@@ -19,19 +19,34 @@ Window::~Window() = default;
 
 bool Window::Create()
 {
+    HICON largeIcon = static_cast<HICON>(
+        LoadImageW(instance_, MAKEINTRESOURCEW(101), IMAGE_ICON, GetSystemMetrics(SM_CXICON), GetSystemMetrics(SM_CYICON), 0));
+    HICON smallIcon = static_cast<HICON>(LoadImageW(instance_, MAKEINTRESOURCEW(101), IMAGE_ICON,
+                                                    GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), 0));
+
     WNDCLASSEXW windowClass = {};
     windowClass.cbSize = sizeof(windowClass);
     windowClass.lpfnWndProc = WindowProc;
     windowClass.hInstance = instance_;
+    windowClass.hIcon = largeIcon;
     windowClass.hCursor = LoadCursor(nullptr, IDC_ARROW);
     windowClass.hbrBackground = nullptr;
     windowClass.lpszClassName = className_.c_str();
+    windowClass.hIconSm = smallIcon;
     RegisterClassExW(&windowClass);
 
     hwnd_ = CreateWindowExW(0, className_.c_str(), title_.c_str(), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
                             width_, height_, nullptr, nullptr, instance_, this);
     if (hwnd_)
     {
+        if (largeIcon)
+        {
+            SendMessageW(hwnd_, WM_SETICON, ICON_BIG, reinterpret_cast<LPARAM>(largeIcon));
+        }
+        if (smallIcon)
+        {
+            SendMessageW(hwnd_, WM_SETICON, ICON_SMALL, reinterpret_cast<LPARAM>(smallIcon));
+        }
         SetTimer(hwnd_, 1, GetCaretBlinkTime(), nullptr);
     }
     return hwnd_ != nullptr;