diff --git a/dlls/msctf/context.c b/dlls/msctf/context.c
index 35838c92382..9a0c8feeca6 100644
--- a/dlls/msctf/context.c
+++ b/dlls/msctf/context.c
@@ -61,7 +61,7 @@ typedef struct tagContext {
     /* const ITfContextCompositionVtbl *ContextCompositionVtbl; */
     /* const ITfContextOwnerCompositionServicesVtbl *ContextOwnerCompositionServicesVtbl; */
     /* const ITfContextOwnerServicesVtbl *ContextOwnerServicesVtbl; */
-    /* const ITfInsertAtSelectionVtbl *InsertAtSelectionVtbl; */
+    const ITfInsertAtSelectionVtbl *InsertAtSelectionVtbl;
     /* const ITfMouseTrackerVtbl *MouseTrackerVtbl; */
     /* const ITfQueryEmbeddedVtbl *QueryEmbeddedVtbl; */
     /* const ITfSourceSingleVtbl *SourceSingleVtbl; */
@@ -108,6 +108,11 @@ static inline Context *impl_from_ITfSourceVtbl(ITfSource *iface)
     return (Context *)((char *)iface - FIELD_OFFSET(Context,SourceVtbl));
 }
 
+static inline Context *impl_from_ITfInsertAtSelectionVtbl(ITfInsertAtSelection*iface)
+{
+    return (Context *)((char *)iface - FIELD_OFFSET(Context,InsertAtSelectionVtbl));
+}
+
 static void free_sink(ContextSink *sink)
 {
         IUnknown_Release(sink->interfaces.pIUnknown);
@@ -186,6 +191,10 @@ static HRESULT WINAPI Context_QueryInterface(ITfContext *iface, REFIID iid, LPVO
     {
         *ppvOut = &This->SourceVtbl;
     }
+    else if (IsEqualIID(iid, &IID_ITfInsertAtSelection))
+    {
+        *ppvOut = &This->InsertAtSelectionVtbl;
+    }
 
     if (*ppvOut)
     {
@@ -578,6 +587,55 @@ static const ITfSourceVtbl Context_SourceVtbl =
     ContextSource_UnadviseSink,
 };
 
+/*****************************************************
+ * ITfInsertAtSelection functions
+ *****************************************************/
+static HRESULT WINAPI InsertAtSelection_QueryInterface(ITfInsertAtSelection *iface, REFIID iid, LPVOID *ppvOut)
+{
+    Context *This = impl_from_ITfInsertAtSelectionVtbl(iface);
+    return Context_QueryInterface((ITfContext *)This, iid, *ppvOut);
+}
+
+static ULONG WINAPI InsertAtSelection_AddRef(ITfInsertAtSelection *iface)
+{
+    Context *This = impl_from_ITfInsertAtSelectionVtbl(iface);
+    return Context_AddRef((ITfContext *)This);
+}
+
+static ULONG WINAPI InsertAtSelection_Release(ITfInsertAtSelection *iface)
+{
+    Context *This = impl_from_ITfInsertAtSelectionVtbl(iface);
+    return Context_Release((ITfContext *)This);
+}
+
+static WINAPI HRESULT InsertAtSelection_InsertTextAtSelection(
+        ITfInsertAtSelection *iface, TfEditCookie ec, DWORD dwFlags,
+        const WCHAR *pchText, LONG cch, ITfRange **ppRange)
+{
+    Context *This = impl_from_ITfInsertAtSelectionVtbl(iface);
+    FIXME("STUB:(%p)\n",This);
+    return E_NOTIMPL;
+}
+
+static WINAPI HRESULT InsertAtSelection_InsertEmbeddedAtSelection(
+        ITfInsertAtSelection *iface, TfEditCookie ec, DWORD dwFlags,
+        IDataObject *pDataObject, ITfRange **ppRange)
+{
+    Context *This = impl_from_ITfInsertAtSelectionVtbl(iface);
+    FIXME("STUB:(%p)\n",This);
+    return E_NOTIMPL;
+}
+
+static const ITfInsertAtSelectionVtbl Context_InsertAtSelectionVtbl =
+{
+    InsertAtSelection_QueryInterface,
+    InsertAtSelection_AddRef,
+    InsertAtSelection_Release,
+
+    InsertAtSelection_InsertTextAtSelection,
+    InsertAtSelection_InsertEmbeddedAtSelection,
+};
+
 HRESULT Context_Constructor(TfClientId tidOwner, IUnknown *punk, ITfContext **ppOut, TfEditCookie *pecTextStore)
 {
     Context *This;
@@ -598,6 +656,7 @@ HRESULT Context_Constructor(TfClientId tidOwner, IUnknown *punk, ITfContext **pp
 
     This->ContextVtbl= &Context_ContextVtbl;
     This->SourceVtbl = &Context_SourceVtbl;
+    This->InsertAtSelectionVtbl = &Context_InsertAtSelectionVtbl;
     This->refCount = 1;
     This->tidOwner = tidOwner;
     This->connected = FALSE;
diff --git a/include/msctf.idl b/include/msctf.idl
index 93f70c177b9..fc87c0a4e24 100644
--- a/include/msctf.idl
+++ b/include/msctf.idl
@@ -868,3 +868,28 @@ interface ITfRange : IUnknown
     HRESULT GetContext(
         [out] ITfContext **ppContext);
 };
+
+[
+    object,
+    uuid(55ce16ba-3014-41c1-9ceb-fade1446ac6c),
+    pointer_default(unique)
+]
+interface ITfInsertAtSelection : IUnknown
+{
+    const DWORD TF_IAS_NOQUERY   = 0x1;
+    const DWORD TF_IAS_QUERYONLY = 0x2;
+    const DWORD TF_IAS_NO_DEFAULT_COMPOSITION = 0x80000000;
+
+    HRESULT InsertTextAtSelection(
+        [in] TfEditCookie ec,
+        [in] DWORD dwFlags,
+        [in, size_is(cch)] const WCHAR *pchText,
+        [in] LONG cch,
+        [out] ITfRange **ppRange);
+
+    HRESULT InsertEmbeddedAtSelection(
+        [in] TfEditCookie ec,
+        [in] DWORD dwFlags,
+        [in] IDataObject *pDataObject,
+        [out] ITfRange **ppRange);
+};