diff --git a/src/opentimelineio/unknownSchema.h b/src/opentimelineio/unknownSchema.h
index 4ba11087e..e0e738f7b 100644
--- a/src/opentimelineio/unknownSchema.h
+++ b/src/opentimelineio/unknownSchema.h
@@ -31,6 +31,11 @@ class UnknownSchema : public SerializableObject
         return _original_schema_version;
     }
 
+    AnyDictionary& data() noexcept
+    {
+        return _data;
+    }
+
     bool read_from(Reader&) override;
     void write_to(Writer&) const override;
 
diff --git a/src/py-opentimelineio/opentimelineio-bindings/otio_serializableObjects.cpp b/src/py-opentimelineio/opentimelineio-bindings/otio_serializableObjects.cpp
index 5a99ed8b8..fcf8fcda8 100644
--- a/src/py-opentimelineio/opentimelineio-bindings/otio_serializableObjects.cpp
+++ b/src/py-opentimelineio/opentimelineio-bindings/otio_serializableObjects.cpp
@@ -182,6 +182,9 @@ static void define_bases1(py::module m) {
         .def_property_readonly("is_unknown_schema", &SerializableObject::is_unknown_schema);
 
     py::class_<UnknownSchema, SerializableObject, managing_ptr<UnknownSchema>>(m, "UnknownSchema")
+        .def_property_readonly("data", [](UnknownSchema* schema) {
+                auto ptr = schema->data().get_or_create_mutation_stamp();
+            return (AnyDictionaryProxy*)(ptr); }, py::return_value_policy::take_ownership)
         .def_property_readonly("original_schema_name", &UnknownSchema::original_schema_name)
         .def_property_readonly("original_schema_version", &UnknownSchema::original_schema_version);
 
diff --git a/tests/test_unknown_schema.py b/tests/test_unknown_schema.py
index 54e2b89b6..f35d3b63a 100644
--- a/tests/test_unknown_schema.py
+++ b/tests/test_unknown_schema.py
@@ -63,6 +63,17 @@ def test_is_unknown_schema(self):
         unknown = self.orig.media_reference.metadata["stuff"]
         self.assertTrue(unknown.is_unknown_schema)
 
+    def test_unknown_to_dict(self):
+        unknown = self.orig.media_reference.metadata["stuff"]
+        self.assertTrue(unknown.is_unknown_schema)
+        self.assertEqual(
+            unknown.data,
+            {
+                "some_data": 895,
+                "howlongami": otio.opentime.RationalTime(rate=30, value=100)
+            }
+        )
+
 
 if __name__ == '__main__':
     unittest.main()