diff --git a/src/dawn_native/QuerySet.cpp b/src/dawn_native/QuerySet.cpp
index 26e9c6d1c9..e8e3c9083c 100644
--- a/src/dawn_native/QuerySet.cpp
+++ b/src/dawn_native/QuerySet.cpp
@@ -58,6 +58,14 @@ namespace dawn_native {
                 break;
 
             case wgpu::QueryType::PipelineStatistics: {
+                // TODO(crbug.com/1177506): Pipeline statistics query is not fully implemented.
+                // Disallow it as unsafe until the implementaion is completed.
+                if (device->IsToggleEnabled(Toggle::DisallowUnsafeAPIs)) {
+                    return DAWN_VALIDATION_ERROR(
+                        "Pipeline statistics query is disallowed because it's not fully "
+                        "implemented");
+                }
+
                 if (!device->IsExtensionEnabled(Extension::PipelineStatisticsQuery)) {
                     return DAWN_VALIDATION_ERROR(
                         "The pipeline statistics query feature is not supported");
diff --git a/src/tests/unittests/validation/QueryValidationTests.cpp b/src/tests/unittests/validation/QueryValidationTests.cpp
index 1ee0134765..53a650f56e 100644
--- a/src/tests/unittests/validation/QueryValidationTests.cpp
+++ b/src/tests/unittests/validation/QueryValidationTests.cpp
@@ -226,7 +226,7 @@ class TimestampQueryValidationTest : public QuerySetValidationTest {
   protected:
     WGPUDevice CreateTestDevice() override {
         dawn_native::DeviceDescriptor descriptor;
-        descriptor.requiredExtensions = {"timestamp_query"};
+        descriptor.requiredExtensions.push_back("timestamp_query");
         return adapter.CreateDevice(&descriptor);
     }
 };
@@ -429,7 +429,10 @@ class PipelineStatisticsQueryValidationTest : public QuerySetValidationTest {
   protected:
     WGPUDevice CreateTestDevice() override {
         dawn_native::DeviceDescriptor descriptor;
-        descriptor.requiredExtensions = {"pipeline_statistics_query"};
+        descriptor.requiredExtensions.push_back("pipeline_statistics_query");
+        // TODO(crbug.com/1177506): Pipeline statistic query is an unsafe API, disable disallowing
+        // unsafe APIs to test it.
+        descriptor.forceDisabledToggles.push_back("disallow_unsafe_apis");
         return adapter.CreateDevice(&descriptor);
     }
 };
diff --git a/src/tests/unittests/validation/UnsafeAPIValidationTests.cpp b/src/tests/unittests/validation/UnsafeAPIValidationTests.cpp
index 6eebeb0a26..02e55fd761 100644
--- a/src/tests/unittests/validation/UnsafeAPIValidationTests.cpp
+++ b/src/tests/unittests/validation/UnsafeAPIValidationTests.cpp
@@ -201,3 +201,35 @@ TEST_F(UnsafeAPIValidationTest, DynamicStorageBuffer) {
         ASSERT_DEVICE_ERROR(device.CreateBindGroupLayout(&desc));
     }
 }
+
+class UnsafeQueryAPIValidationTest : public ValidationTest {
+  protected:
+    WGPUDevice CreateTestDevice() override {
+        dawn_native::DeviceDescriptor descriptor;
+        descriptor.requiredExtensions.push_back("pipeline_statistics_query");
+        descriptor.forceEnabledToggles.push_back("disallow_unsafe_apis");
+        return adapter.CreateDevice(&descriptor);
+    }
+};
+
+// Check that pipeline statistics query are disallowed.
+TEST_F(UnsafeQueryAPIValidationTest, PipelineStatisticsDisallowed) {
+    wgpu::QuerySetDescriptor descriptor;
+    descriptor.count = 1;
+
+    // Control case: occlusion query creation is allowed.
+    {
+        descriptor.type = wgpu::QueryType::Occlusion;
+        device.CreateQuerySet(&descriptor);
+    }
+
+    // Error case: pipeline statistics query creation is disallowed.
+    {
+        descriptor.type = wgpu::QueryType::PipelineStatistics;
+        std::vector<wgpu::PipelineStatisticName> pipelineStatistics = {
+            wgpu::PipelineStatisticName::VertexShaderInvocations};
+        descriptor.pipelineStatistics = pipelineStatistics.data();
+        descriptor.pipelineStatisticsCount = pipelineStatistics.size();
+        ASSERT_DEVICE_ERROR(device.CreateQuerySet(&descriptor));
+    }
+}