diff --git a/libcxx/include/string b/libcxx/include/string
--- a/libcxx/include/string
+++ b/libcxx/include/string
@@ -554,11 +554,11 @@
 template <> struct hash<u32string>;
 template <> struct hash<wstring>;
 
-basic_string<char>     operator "" s( const char *str,     size_t len );           // C++14, constexpr since C++20
-basic_string<wchar_t>  operator "" s( const wchar_t *str,  size_t len );           // C++14, constexpr since C++20
-constexpr basic_string<char8_t>  operator "" s( const char8_t *str,  size_t len ); // C++20
-basic_string<char16_t> operator "" s( const char16_t *str, size_t len );           // C++14, constexpr since C++20
-basic_string<char32_t> operator "" s( const char32_t *str, size_t len );           // C++14, constexpr since C++20
+basic_string<char>     operator""s( const char *str,     size_t len );           // C++14, constexpr since C++20
+basic_string<wchar_t>  operator""s( const wchar_t *str,  size_t len );           // C++14, constexpr since C++20
+constexpr basic_string<char8_t>  operator""s( const char8_t *str,  size_t len ); // C++20
+basic_string<char16_t> operator""s( const char16_t *str, size_t len );           // C++14, constexpr since C++20
+basic_string<char32_t> operator""s( const char32_t *str, size_t len );           // C++14, constexpr since C++20
 
 }  // std
 
@@ -4371,14 +4371,14 @@
   inline namespace string_literals
   {
     inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
-    basic_string<char> operator "" s( const char *__str, size_t __len )
+    basic_string<char> operator""s( const char *__str, size_t __len )
     {
         return basic_string<char> (__str, __len);
     }
 
 #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
     inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
-    basic_string<wchar_t> operator "" s( const wchar_t *__str, size_t __len )
+    basic_string<wchar_t> operator""s( const wchar_t *__str, size_t __len )
     {
         return basic_string<wchar_t> (__str, __len);
     }
@@ -4386,20 +4386,20 @@
 
 #ifndef _LIBCPP_HAS_NO_CHAR8_T
     inline _LIBCPP_HIDE_FROM_ABI constexpr
-    basic_string<char8_t> operator "" s(const char8_t *__str, size_t __len)
+    basic_string<char8_t> operator""s(const char8_t *__str, size_t __len)
     {
         return basic_string<char8_t> (__str, __len);
     }
 #endif
 
     inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
-    basic_string<char16_t> operator "" s( const char16_t *__str, size_t __len )
+    basic_string<char16_t> operator""s( const char16_t *__str, size_t __len )
     {
         return basic_string<char16_t> (__str, __len);
     }
 
     inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20
-    basic_string<char32_t> operator "" s( const char32_t *__str, size_t __len )
+    basic_string<char32_t> operator""s( const char32_t *__str, size_t __len )
     {
         return basic_string<char32_t> (__str, __len);
     }
diff --git a/libcxx/include/string_view b/libcxx/include/string_view
--- a/libcxx/include/string_view
+++ b/libcxx/include/string_view
@@ -191,11 +191,11 @@
   template <> struct hash<u32string_view>;
   template <> struct hash<wstring_view>;
 
-  constexpr basic_string_view<char>     operator "" sv(const char *str,     size_t len) noexcept;
-  constexpr basic_string_view<wchar_t>  operator "" sv(const wchar_t *str,  size_t len) noexcept;
-  constexpr basic_string_view<char8_t>  operator "" sv(const char8_t *str,  size_t len) noexcept; // C++20
-  constexpr basic_string_view<char16_t> operator "" sv(const char16_t *str, size_t len) noexcept;
-  constexpr basic_string_view<char32_t> operator "" sv(const char32_t *str, size_t len) noexcept;
+  constexpr basic_string_view<char>     operator""sv(const char *str,     size_t len) noexcept;
+  constexpr basic_string_view<wchar_t>  operator""sv(const wchar_t *str,  size_t len) noexcept;
+  constexpr basic_string_view<char8_t>  operator""sv(const char8_t *str,  size_t len) noexcept; // C++20
+  constexpr basic_string_view<char16_t> operator""sv(const char16_t *str, size_t len) noexcept;
+  constexpr basic_string_view<char32_t> operator""sv(const char32_t *str, size_t len) noexcept;
 
 }  // namespace std
 
@@ -1015,14 +1015,14 @@
   inline namespace string_view_literals
   {
     inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
-    basic_string_view<char> operator "" sv(const char *__str, size_t __len) _NOEXCEPT
+    basic_string_view<char> operator""sv(const char *__str, size_t __len) _NOEXCEPT
     {
         return basic_string_view<char> (__str, __len);
     }
 
 #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
     inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
-    basic_string_view<wchar_t> operator "" sv(const wchar_t *__str, size_t __len) _NOEXCEPT
+    basic_string_view<wchar_t> operator""sv(const wchar_t *__str, size_t __len) _NOEXCEPT
     {
         return basic_string_view<wchar_t> (__str, __len);
     }
@@ -1030,20 +1030,20 @@
 
 #ifndef _LIBCPP_HAS_NO_CHAR8_T
     inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
-    basic_string_view<char8_t> operator "" sv(const char8_t *__str, size_t __len) _NOEXCEPT
+    basic_string_view<char8_t> operator""sv(const char8_t *__str, size_t __len) _NOEXCEPT
     {
         return basic_string_view<char8_t> (__str, __len);
     }
 #endif
 
     inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
-    basic_string_view<char16_t> operator "" sv(const char16_t *__str, size_t __len) _NOEXCEPT
+    basic_string_view<char16_t> operator""sv(const char16_t *__str, size_t __len) _NOEXCEPT
     {
         return basic_string_view<char16_t> (__str, __len);
     }
 
     inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
-    basic_string_view<char32_t> operator "" sv(const char32_t *__str, size_t __len) _NOEXCEPT
+    basic_string_view<char32_t> operator""sv(const char32_t *__str, size_t __len) _NOEXCEPT
     {
         return basic_string_view<char32_t> (__str, __len);
     }
diff --git a/libcxx/modules/std/string_view.cppm b/libcxx/modules/std/string_view.cppm
--- a/libcxx/modules/std/string_view.cppm
+++ b/libcxx/modules/std/string_view.cppm
@@ -42,7 +42,7 @@
   inline namespace literals {
     inline namespace string_view_literals {
       // [string.view.literals], suffix for basic_string_view literals
-      using std::literals::string_view_literals::operator"" sv;
+      using std::literals::string_view_literals::operator""sv;
     } // namespace string_view_literals
   }   // namespace literals
 } // namespace std