diff --git a/pkg/validate/validate.go b/pkg/validate/validate.go
index ec1be1f6..7095451b 100644
--- a/pkg/validate/validate.go
+++ b/pkg/validate/validate.go
@@ -29,6 +29,7 @@ import (
 	runtimeschema "k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/apimachinery/pkg/util/validation/field"
 	celconfig "k8s.io/apiserver/pkg/apis/cel"
+	kubescheme "k8s.io/client-go/kubernetes/scheme"
 
 	"github.com/crossplane/crossplane-runtime/v2/pkg/errors"
 	"github.com/crossplane/crossplane-runtime/v2/pkg/xcrd"
@@ -86,6 +87,10 @@ func validateResource(
 
 	sv, ok := schemaValidators[gvk]
 	if !ok {
+		if kubescheme.Scheme.Recognizes(gvk) {
+			rvr.Status = ValidationStatusValid
+			return rvr
+		}
 		rvr.Status = ValidationStatusMissingSchema
 		return rvr
 	}
diff --git a/pkg/validate/validate_test.go b/pkg/validate/validate_test.go
index 6b604ac5..0b32998f 100644
--- a/pkg/validate/validate_test.go
+++ b/pkg/validate/validate_test.go
@@ -167,6 +167,16 @@ func TestSchemaValidate(t *testing.T) {
 		"kind":       "Unknown",
 		"metadata":   map[string]any{"name": "no-crd"},
 	}}
+	kubernetesCoreResource := &unstructured.Unstructured{Object: map[string]any{
+		"apiVersion": "v1",
+		"kind":       "Secret",
+		"metadata":   map[string]any{"name": "connection-details"},
+	}}
+	kubernetesGroupedResource := &unstructured.Unstructured{Object: map[string]any{
+		"apiVersion": "apps/v1",
+		"kind":       "Deployment",
+		"metadata":   map[string]any{"name": "workload"},
+	}}
 	unknownFieldResource := &unstructured.Unstructured{Object: map[string]any{
 		"apiVersion": "test.org/v1alpha1",
 		"kind":       "Test",
@@ -260,6 +270,19 @@ func TestSchemaValidate(t *testing.T) {
 				perRes:  []expect{{status: ValidationStatusMissingSchema}},
 			},
 		},
+		"KubernetesBuiltIn": {
+			reason: "Built-in Kubernetes resources should not require CRD schemas.",
+			args: args{
+				resources: []*unstructured.Unstructured{kubernetesCoreResource, kubernetesGroupedResource},
+			},
+			want: want{
+				summary: ValidationSummary{Total: 2, Valid: 2},
+				perRes: []expect{
+					{status: ValidationStatusValid},
+					{status: ValidationStatusValid},
+				},
+			},
+		},
 		"UnknownField": {
 			reason: "A resource with a field not declared in the schema should surface an unknownField error on the offending field path.",
 			args: args{