diff --git a/src/driver/spanner/SpannerConnectionCredentialsOptions.ts b/src/driver/spanner/SpannerConnectionCredentialsOptions.ts
index aa9ba9111..512a9cc6f 100644
--- a/src/driver/spanner/SpannerConnectionCredentialsOptions.ts
+++ b/src/driver/spanner/SpannerConnectionCredentialsOptions.ts
@@ -16,4 +16,19 @@ export interface SpannerConnectionCredentialsOptions {
      * Database host port.
      */
     readonly databaseId?: string
+
+    /**
+     * Object containing client_email and private_key properties, or the external account client options. Cannot be used with apiKey.
+     */
+    readonly credentials?: {
+        /**
+         * Client email connection credentials (Optional)
+         */
+        readonly client_email: string
+
+        /**
+         * Private key connection credentials (Optional)
+         */
+        readonly private_key: string
+    }
 }
diff --git a/src/driver/spanner/SpannerDriver.ts b/src/driver/spanner/SpannerDriver.ts
index f1151387e..5728e2194 100644
--- a/src/driver/spanner/SpannerDriver.ts
+++ b/src/driver/spanner/SpannerDriver.ts
@@ -732,6 +732,16 @@ export class SpannerDriver implements Driver {
     protected loadDependencies(): void {
         try {
             const lib = this.options.driver || PlatformTools.load("spanner")
+
+            if (this.options.credentials) {
+                this.spanner = new lib.Spanner({
+                    projectId: this.options.projectId,
+                    credentials: this.options.credentials,
+                })
+
+                return
+            }
+
             this.spanner = new lib.Spanner({
                 projectId: this.options.projectId,
             })