diff --git a/gcc/testsuite/g++.dg/reflect/feat2.C b/gcc/testsuite/g++.dg/reflect/feat2.C
index 902732b0824..dc4c82cdaab 100644
--- a/gcc/testsuite/g++.dg/reflect/feat2.C
+++ b/gcc/testsuite/g++.dg/reflect/feat2.C
@@ -9,3 +9,9 @@
 #elif __cpp_lib_reflection != 202506
 #  error "__cpp_lib_reflection != 202506"
 #endif
+
+#ifndef __cpp_lib_define_static
+#  error "__cpp_lib_define_static"
+#elif __cpp_lib_define_static != 202506
+#  error "__cpp_lib_define_static != 202506"
+#endif
diff --git a/gcc/testsuite/g++.dg/reflect/feat3.C b/gcc/testsuite/g++.dg/reflect/feat3.C
new file mode 100644
index 00000000000..68b72e27f39
--- /dev/null
+++ b/gcc/testsuite/g++.dg/reflect/feat3.C
@@ -0,0 +1,17 @@
+// { dg-do compile { target c++26 } }
+// { dg-additional-options "-freflection" }
+// Test feature test macros.
+
+#include <meta>
+
+#ifndef __cpp_lib_reflection
+#  error "__cpp_lib_reflection"
+#elif __cpp_lib_reflection != 202506
+#  error "__cpp_lib_reflection != 202506"
+#endif
+
+#ifndef __cpp_lib_define_static
+#  error "__cpp_lib_define_static"
+#elif __cpp_lib_define_static != 202506
+#  error "__cpp_lib_define_static != 202506"
+#endif
diff --git a/libstdc++-v3/include/bits/version.def b/libstdc++-v3/include/bits/version.def
index 8c5f4bb7c4c..ba0ef5aecfd 100644
--- a/libstdc++-v3/include/bits/version.def
+++ b/libstdc++-v3/include/bits/version.def
@@ -2271,6 +2271,16 @@ ftms = {
   };
 };
 
+ftms = {
+  name = define_static;
+  values = {
+    v = 202506;
+    cxxmin = 26;
+    extra_cond = "__cpp_impl_reflection >= 202506L";
+    cxx11abi = yes;
+  };
+};
+
 ftms = {
   name = is_implicit_lifetime;
   values = {
diff --git a/libstdc++-v3/include/bits/version.h b/libstdc++-v3/include/bits/version.h
index 985701447be..74d1a28f75c 100644
--- a/libstdc++-v3/include/bits/version.h
+++ b/libstdc++-v3/include/bits/version.h
@@ -2546,6 +2546,16 @@
 #endif /* !defined(__cpp_lib_reflection) */
 #undef __glibcxx_want_reflection
 
+#if !defined(__cpp_lib_define_static)
+# if (__cplusplus >  202302L) && _GLIBCXX_USE_CXX11_ABI && (__cpp_impl_reflection >= 202506L)
+#  define __glibcxx_define_static 202506L
+#  if defined(__glibcxx_want_all) || defined(__glibcxx_want_define_static)
+#   define __cpp_lib_define_static 202506L
+#  endif
+# endif
+#endif /* !defined(__cpp_lib_define_static) */
+#undef __glibcxx_want_define_static
+
 #if !defined(__cpp_lib_is_implicit_lifetime)
 # if (__cplusplus >= 202100L) && (__has_builtin(__builtin_is_implicit_lifetime))
 #  define __glibcxx_is_implicit_lifetime 202302L
diff --git a/libstdc++-v3/include/std/meta b/libstdc++-v3/include/std/meta
index 033746a4034..59a678037a1 100644
--- a/libstdc++-v3/include/std/meta
+++ b/libstdc++-v3/include/std/meta
@@ -34,6 +34,7 @@
 #endif
 
 #define __glibcxx_want_reflection
+#define __glibcxx_want_define_static
 #include <bits/version.h>
 
 #if __glibcxx_reflection >= 202506L // C++ >= 26 && __cpp_impl_reflection