diff --git a/source/blender/editors/space_node/drawnode.cc b/source/blender/editors/space_node/drawnode.cc
index 0d9937de184..804be1b191f 100644
--- a/source/blender/editors/space_node/drawnode.cc
+++ b/source/blender/editors/space_node/drawnode.cc
@@ -1564,7 +1564,7 @@ static void std_node_socket_interface_draw(ID *id,
 
   const bNodeTree *node_tree = reinterpret_cast<const bNodeTree *>(id);
   if (interface_socket->flag & NODE_INTERFACE_SOCKET_INPUT && node_tree->type == NTREE_GEOMETRY) {
-    if (ELEM(type, SOCK_INT, SOCK_VECTOR)) {
+    if (ELEM(type, SOCK_INT, SOCK_VECTOR, SOCK_MATRIX)) {
       uiItemR(col, &ptr, "default_input", DEFAULT_FLAGS, nullptr, ICON_NONE);
     }
   }
diff --git a/source/blender/makesdna/DNA_node_tree_interface_types.h b/source/blender/makesdna/DNA_node_tree_interface_types.h
index 8f947ec1373..3d9793f7062 100644
--- a/source/blender/makesdna/DNA_node_tree_interface_types.h
+++ b/source/blender/makesdna/DNA_node_tree_interface_types.h
@@ -134,6 +134,7 @@ typedef enum GeometryNodeDefaultInputType {
   GEO_NODE_DEFAULT_FIELD_INPUT_ID_INDEX_FIELD = 2,
   GEO_NODE_DEFAULT_FIELD_INPUT_NORMAL_FIELD = 3,
   GEO_NODE_DEFAULT_FIELD_INPUT_POSITION_FIELD = 4,
+  GEO_NODE_DEFAULT_FIELD_INPUT_INSTANCE_TRANSFORM_FIELD = 5,
 } GeometryNodeDefaultInputType;
 
 typedef struct bNodeTreeInterfacePanel {
diff --git a/source/blender/makesrna/intern/rna_node_tree_interface.cc b/source/blender/makesrna/intern/rna_node_tree_interface.cc
index 161a4fc7fe9..d3f8b9bafef 100644
--- a/source/blender/makesrna/intern/rna_node_tree_interface.cc
+++ b/source/blender/makesrna/intern/rna_node_tree_interface.cc
@@ -447,6 +447,15 @@ static const EnumPropertyItem *rna_NodeTreeInterfaceSocket_default_input_itemf(
                                       N_("The position from the context")};
       RNA_enum_item_add(&items, &items_count, &position);
     }
+    else if (type->type == SOCK_MATRIX) {
+      const EnumPropertyItem instance_transform{
+          GEO_NODE_DEFAULT_FIELD_INPUT_INSTANCE_TRANSFORM_FIELD,
+          "INSTANCE_TRANSFORM",
+          0,
+          N_("Instance Transform"),
+          N_("Transformation of each instance from the geometry context")};
+      RNA_enum_item_add(&items, &items_count, &instance_transform);
+    }
   }
 
   RNA_enum_item_end(&items, &items_count);
diff --git a/source/blender/nodes/intern/node_common.cc b/source/blender/nodes/intern/node_common.cc
index 50f84125345..c4870c5cc4e 100644
--- a/source/blender/nodes/intern/node_common.cc
+++ b/source/blender/nodes/intern/node_common.cc
@@ -451,6 +451,11 @@ static void set_default_input_field(const bNodeTreeInterfaceSocket &input, Socke
       decl.hide_value = true;
     }
   }
+  else if (decl.socket_type == SOCK_MATRIX) {
+    decl.implicit_input_fn = std::make_unique<ImplicitInputValueFn>(
+        implicit_field_inputs::instance_transform);
+    decl.hide_value = true;
+  }
 }
 
 void node_group_declare(NodeDeclarationBuilder &b)