diff --git a/docs/pages/x/api/data-grid/data-grid-premium.json b/docs/pages/x/api/data-grid/data-grid-premium.json
index bce75b9e5e66..1c79c35a04e6 100644
--- a/docs/pages/x/api/data-grid/data-grid-premium.json
+++ b/docs/pages/x/api/data-grid/data-grid-premium.json
@@ -205,7 +205,7 @@
     },
     "keepColumnPositionIfDraggedOutside": { "type": { "name": "bool" }, "default": "false" },
     "keepNonExistentRowsSelected": { "type": { "name": "bool" }, "default": "false" },
-    "loading": { "type": { "name": "bool" } },
+    "loading": { "type": { "name": "bool" }, "default": "false" },
     "localeText": { "type": { "name": "object" } },
     "logger": {
       "type": {
diff --git a/docs/pages/x/api/data-grid/data-grid-pro.json b/docs/pages/x/api/data-grid/data-grid-pro.json
index 7767957b769d..c3eb24a2ffb8 100644
--- a/docs/pages/x/api/data-grid/data-grid-pro.json
+++ b/docs/pages/x/api/data-grid/data-grid-pro.json
@@ -182,7 +182,7 @@
     },
     "keepColumnPositionIfDraggedOutside": { "type": { "name": "bool" }, "default": "false" },
     "keepNonExistentRowsSelected": { "type": { "name": "bool" }, "default": "false" },
-    "loading": { "type": { "name": "bool" } },
+    "loading": { "type": { "name": "bool" }, "default": "false" },
     "localeText": { "type": { "name": "object" } },
     "logger": {
       "type": {
diff --git a/docs/pages/x/api/data-grid/data-grid.json b/docs/pages/x/api/data-grid/data-grid.json
index 0691480696ad..7543c9d9f0ab 100644
--- a/docs/pages/x/api/data-grid/data-grid.json
+++ b/docs/pages/x/api/data-grid/data-grid.json
@@ -141,7 +141,7 @@
       }
     },
     "keepNonExistentRowsSelected": { "type": { "name": "bool" }, "default": "false" },
-    "loading": { "type": { "name": "bool" } },
+    "loading": { "type": { "name": "bool" }, "default": "false" },
     "localeText": { "type": { "name": "object" } },
     "logger": {
       "type": {
diff --git a/packages/x-data-grid-premium/src/DataGridPremium/DataGridPremium.tsx b/packages/x-data-grid-premium/src/DataGridPremium/DataGridPremium.tsx
index 2cba34da09e7..13c08a00b7e1 100644
--- a/packages/x-data-grid-premium/src/DataGridPremium/DataGridPremium.tsx
+++ b/packages/x-data-grid-premium/src/DataGridPremium/DataGridPremium.tsx
@@ -504,6 +504,7 @@ DataGridPremiumRaw.propTypes = {
   keepNonExistentRowsSelected: PropTypes.bool,
   /**
    * If `true`, a loading overlay is displayed.
+   * @default false
    */
   loading: PropTypes.bool,
   /**
diff --git a/packages/x-data-grid-pro/src/DataGridPro/DataGridPro.tsx b/packages/x-data-grid-pro/src/DataGridPro/DataGridPro.tsx
index 7f7c45fa1d5e..1cacac533b70 100644
--- a/packages/x-data-grid-pro/src/DataGridPro/DataGridPro.tsx
+++ b/packages/x-data-grid-pro/src/DataGridPro/DataGridPro.tsx
@@ -459,6 +459,7 @@ DataGridProRaw.propTypes = {
   keepNonExistentRowsSelected: PropTypes.bool,
   /**
    * If `true`, a loading overlay is displayed.
+   * @default false
    */
   loading: PropTypes.bool,
   /**
diff --git a/packages/x-data-grid/src/DataGrid/DataGrid.tsx b/packages/x-data-grid/src/DataGrid/DataGrid.tsx
index 7c567b6774a2..ab054cbab917 100644
--- a/packages/x-data-grid/src/DataGrid/DataGrid.tsx
+++ b/packages/x-data-grid/src/DataGrid/DataGrid.tsx
@@ -373,6 +373,7 @@ DataGridRaw.propTypes = {
   keepNonExistentRowsSelected: PropTypes.bool,
   /**
    * If `true`, a loading overlay is displayed.
+   * @default false
    */
   loading: PropTypes.bool,
   /**
diff --git a/packages/x-data-grid/src/DataGrid/useDataGridProps.ts b/packages/x-data-grid/src/DataGrid/useDataGridProps.ts
index 2af3393e1ea1..1cd75b30f70b 100644
--- a/packages/x-data-grid/src/DataGrid/useDataGridProps.ts
+++ b/packages/x-data-grid/src/DataGrid/useDataGridProps.ts
@@ -77,6 +77,7 @@ export const DATA_GRID_PROPS_DEFAULT_VALUES: DataGridPropsWithDefaultValues = {
   rowPositionsDebounceMs: 166,
   autosizeOnMount: false,
   disableAutosize: false,
+  loading: false,
 };
 
 const defaultSlots = DATA_GRID_DEFAULT_SLOTS_COMPONENTS;
diff --git a/packages/x-data-grid/src/models/props/DataGridProps.ts b/packages/x-data-grid/src/models/props/DataGridProps.ts
index 19fc5d2cf42a..47a56c9a742a 100644
--- a/packages/x-data-grid/src/models/props/DataGridProps.ts
+++ b/packages/x-data-grid/src/models/props/DataGridProps.ts
@@ -261,6 +261,11 @@ export interface DataGridPropsWithDefaultValues<R extends GridValidRowModel = an
    * @default "error" ("warn" in dev mode)
    */
   logLevel: keyof Logger | false;
+  /**
+   * If `true`, a loading overlay is displayed.
+   * @default false
+   */
+  loading: boolean;
   /**
    * If `true`, pagination is enabled.
    * @default false
@@ -735,10 +740,6 @@ export interface DataGridPropsWithoutDefaultValue<R extends GridValidRowModel =
    * Return the id of a given [[GridRowModel]].
    */
   getRowId?: GridRowIdGetter<R>;
-  /**
-   * If `true`, a loading overlay is displayed.
-   */
-  loading?: boolean;
   /**
    * Nonce of the inline styles for [Content Security Policy](https://www.w3.org/TR/2016/REC-CSP2-20161215/#script-src-the-nonce-attribute).
    */