diff --git a/android/config.go b/android/config.go
index a69adc354..3d341da96 100644
--- a/android/config.go
+++ b/android/config.go
@@ -1425,6 +1425,10 @@ func (c *config) IsVndkDeprecated() bool {
 	return !Bool(c.productVariables.KeepVndk)
 }
 
+func (c *config) VendorApiLevel() string {
+	return String(c.productVariables.VendorApiLevel)
+}
+
 func (c *deviceConfig) Arches() []Arch {
 	var arches []Arch
 	for _, target := range c.config.Targets[Android] {
diff --git a/android/variable.go b/android/variable.go
index 307deaf32..0e7a173d8 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -226,6 +226,8 @@ type ProductVariables struct {
 	DeviceMaxPageSizeSupported            *string  `json:",omitempty"`
 	DevicePageSizeAgnostic                *bool    `json:",omitempty"`
 
+	VendorApiLevel *string `json:",omitempty"`
+
 	RecoverySnapshotVersion *string `json:",omitempty"`
 
 	DeviceSecondaryArch        *string  `json:",omitempty"`
diff --git a/cc/cc_test.go b/cc/cc_test.go
index e2dba9043..cc5254773 100644
--- a/cc/cc_test.go
+++ b/cc/cc_test.go
@@ -40,6 +40,7 @@ func TestMain(m *testing.M) {
 var prepareForCcTest = android.GroupFixturePreparers(
 	PrepareForTestWithCcIncludeVndk,
 	android.FixtureModifyProductVariables(func(variables android.FixtureProductVariables) {
+		variables.VendorApiLevel = StringPtr("202404")
 		variables.DeviceVndkVersion = StringPtr("current")
 		variables.Platform_vndk_version = StringPtr("29")
 	}),
@@ -2131,11 +2132,13 @@ func TestEnforceProductVndkVersion(t *testing.T) {
 	ensureStringContains(t, vendor_cflags, "-D__ANDROID_VNDK__")
 	ensureStringContains(t, vendor_cflags, "-D__ANDROID_VENDOR__")
 	ensureStringNotContains(t, vendor_cflags, "-D__ANDROID_PRODUCT__")
+	ensureStringContains(t, vendor_cflags, "-D__ANDROID_VENDOR_API__=202404")
 
 	product_cflags := product_static.Rule("cc").Args["cFlags"]
 	ensureStringContains(t, product_cflags, "-D__ANDROID_VNDK__")
 	ensureStringContains(t, product_cflags, "-D__ANDROID_PRODUCT__")
 	ensureStringNotContains(t, product_cflags, "-D__ANDROID_VENDOR__")
+	ensureStringNotContains(t, product_cflags, "-D__ANDROID_VENDOR_API__=202404")
 }
 
 func TestEnforceProductVndkVersionErrors(t *testing.T) {
diff --git a/cc/compiler.go b/cc/compiler.go
index 490d3cc3d..bb7885bc7 100644
--- a/cc/compiler.go
+++ b/cc/compiler.go
@@ -406,6 +406,15 @@ func (compiler *baseCompiler) compilerFlags(ctx ModuleContext, flags Flags, deps
 		flags.Global.CommonFlags = append(flags.Global.CommonFlags, "-D__ANDROID_VNDK__")
 		if ctx.inVendor() {
 			flags.Global.CommonFlags = append(flags.Global.CommonFlags, "-D__ANDROID_VENDOR__")
+
+			vendorApiLevel := ctx.Config().VendorApiLevel()
+			if vendorApiLevel == "" {
+				// TODO(b/314036847): This is a fallback for UDC targets.
+				// This must be a build failure when UDC is no longer built
+				// from this source tree.
+				vendorApiLevel = ctx.Config().PlatformSdkVersion().String()
+			}
+			flags.Global.CommonFlags = append(flags.Global.CommonFlags, "-D__ANDROID_VENDOR_API__="+vendorApiLevel)
 		} else if ctx.inProduct() {
 			flags.Global.CommonFlags = append(flags.Global.CommonFlags, "-D__ANDROID_PRODUCT__")
 		}
diff --git a/rust/bindgen.go b/rust/bindgen.go
index ffe532fcb..1cc1574ac 100644
--- a/rust/bindgen.go
+++ b/rust/bindgen.go
@@ -174,6 +174,15 @@ func (b *bindgenDecorator) GenerateSource(ctx ModuleContext, deps PathDeps) andr
 		cflags = append(cflags, "-D__ANDROID_VNDK__")
 		if ctx.RustModule().InVendor() {
 			cflags = append(cflags, "-D__ANDROID_VENDOR__")
+
+			vendorApiLevel := ctx.Config().VendorApiLevel()
+			if vendorApiLevel == "" {
+				// TODO(b/314036847): This is a fallback for UDC targets.
+				// This must be a build failure when UDC is no longer built
+				// from this source tree.
+				vendorApiLevel = ctx.Config().PlatformSdkVersion().String()
+			}
+			cflags = append(cflags, "-D__ANDROID_VENDOR_API__="+vendorApiLevel)
 		} else if ctx.RustModule().InProduct() {
 			cflags = append(cflags, "-D__ANDROID_PRODUCT__")
 		}