diff --git a/change/react-native-windows-2020-04-21-09-24-21-Fix_REACT_STRUCT_inline_issue.json b/change/react-native-windows-2020-04-21-09-24-21-Fix_REACT_STRUCT_inline_issue.json
new file mode 100644
index 00000000000..c6a0f121b8f
--- /dev/null
+++ b/change/react-native-windows-2020-04-21-09-24-21-Fix_REACT_STRUCT_inline_issue.json
@@ -0,0 +1,8 @@
+{
+  "type": "patch",
+  "comment": "Added inline to REACT_STRUCT's GetStructInfo to use in header files",
+  "packageName": "react-native-windows",
+  "email": "vmorozov@microsoft.com",
+  "dependentChangeType": "patch",
+  "date": "2020-04-21T16:24:21.711Z"
+}
\ No newline at end of file
diff --git a/vnext/Microsoft.ReactNative.Cxx/StructInfo.h b/vnext/Microsoft.ReactNative.Cxx/StructInfo.h
index 298c2851ff4..703c63924be 100644
--- a/vnext/Microsoft.ReactNative.Cxx/StructInfo.h
+++ b/vnext/Microsoft.ReactNative.Cxx/StructInfo.h
@@ -9,7 +9,7 @@
 
 #define REACT_STRUCT(type)                                                           \
   struct type;                                                                       \
-  winrt::Microsoft::ReactNative::FieldMap GetStructInfo(type *) noexcept {           \
+  inline winrt::Microsoft::ReactNative::FieldMap GetStructInfo(type *) noexcept {    \
     winrt::Microsoft::ReactNative::FieldMap fieldMap{};                              \
     winrt::Microsoft::ReactNative::CollectStructFields<type, __COUNTER__>(fieldMap); \
     return fieldMap;                                                                 \