diff --git a/openmp/runtime/CMakeLists.txt b/openmp/runtime/CMakeLists.txt
index bcae02eba6a5..6041fb2b23a0 100644
--- a/openmp/runtime/CMakeLists.txt
+++ b/openmp/runtime/CMakeLists.txt
@@ -30,7 +30,7 @@ if(${OPENMP_STANDALONE_BUILD})
   # If adding a new architecture, take a look at cmake/LibompGetArchitecture.cmake
   libomp_get_architecture(LIBOMP_DETECTED_ARCH)
   set(LIBOMP_ARCH ${LIBOMP_DETECTED_ARCH} CACHE STRING
-    "The architecture to build for (x86_64/i386/arm/ppc/ppc64/ppc64le/aarch64/aarch64_32/mic/mips/mips64/riscv64/loongarch64/ve/s390x/wasm32).")
+    "The architecture to build for (x86_64/i386/arm/ppc/ppc64/ppc64le/aarch64/aarch64_32/mic/mips/mips64/riscv64/loongarch64/ve/s390x/sparc/sparcv9/wasm32).")
   # Should assertions be enabled?  They are on by default.
   set(LIBOMP_ENABLE_ASSERTIONS TRUE CACHE BOOL
     "enable assertions?")
@@ -71,6 +71,10 @@ else() # Part of LLVM build
     set(LIBOMP_ARCH ve)
   elseif(LIBOMP_NATIVE_ARCH MATCHES "s390x")
     set(LIBOMP_ARCH s390x)
+  elseif(LIBOMP_NATIVE_ARCH MATCHES "sparcv9")
+    set(LIBOMP_ARCH sparcv9)
+  elseif(LIBOMP_NATIVE_ARCH MATCHES "sparc")
+    set(LIBOMP_ARCH sparc)
   elseif(LIBOMP_NATIVE_ARCH MATCHES "wasm")
     set(LIBOMP_ARCH wasm32)
   else()
@@ -93,7 +97,7 @@ if(LIBOMP_ARCH STREQUAL "aarch64")
   endif()
 endif()
 
-libomp_check_variable(LIBOMP_ARCH 32e x86_64 32 i386 arm ppc ppc64 ppc64le aarch64 aarch64_32 aarch64_a64fx mic mips mips64 riscv64 loongarch64 ve s390x wasm32)
+libomp_check_variable(LIBOMP_ARCH 32e x86_64 32 i386 arm ppc ppc64 ppc64le aarch64 aarch64_32 aarch64_a64fx mic mips mips64 riscv64 loongarch64 ve s390x sparc sparcv9 wasm32)
 
 set(LIBOMP_LIB_TYPE normal CACHE STRING
   "Performance,Profiling,Stubs library (normal/profile/stubs)")
diff --git a/openmp/runtime/cmake/LibompGetArchitecture.cmake b/openmp/runtime/cmake/LibompGetArchitecture.cmake
index 2d5c6622c9f7..81aa700e3b6d 100644
--- a/openmp/runtime/cmake/LibompGetArchitecture.cmake
+++ b/openmp/runtime/cmake/LibompGetArchitecture.cmake
@@ -59,6 +59,10 @@ function(libomp_get_architecture return_arch)
       #error ARCHITECTURE=s390x
     #elif defined(__wasm32__)
       #error ARCHITECTURE=wasm32
+    #elif defined(__sparcv9)
+      #error ARCHITECTURE=sparcv9
+    #elif defined(__sparc)
+      #error ARCHITECTURE=sparc
     #else
       #error ARCHITECTURE=UnknownArchitecture
     #endif
diff --git a/openmp/runtime/cmake/config-ix.cmake b/openmp/runtime/cmake/config-ix.cmake
index ac2bbb902161..144c657be67e 100644
--- a/openmp/runtime/cmake/config-ix.cmake
+++ b/openmp/runtime/cmake/config-ix.cmake
@@ -316,7 +316,9 @@ else()
       (LIBOMP_ARCH STREQUAL ppc64) OR
       (LIBOMP_ARCH STREQUAL riscv64) OR
       (LIBOMP_ARCH STREQUAL loongarch64) OR
-      (LIBOMP_ARCH STREQUAL s390x))
+      (LIBOMP_ARCH STREQUAL s390x) OR
+      (LIBOMP_ARCH STREQUAL sparc) OR
+      (LIBOMP_ARCH STREQUAL sparcv9))
      AND # OS supported?
      ((WIN32 AND LIBOMP_HAVE_PSAPI) OR APPLE OR
       (NOT (WIN32 OR ${CMAKE_SYSTEM_NAME} MATCHES "AIX") AND LIBOMP_HAVE_WEAK_ATTRIBUTE)))
diff --git a/openmp/runtime/src/kmp_gsupport.cpp b/openmp/runtime/src/kmp_gsupport.cpp
index 86cf16470e14..0d04045f7b16 100644
--- a/openmp/runtime/src/kmp_gsupport.cpp
+++ b/openmp/runtime/src/kmp_gsupport.cpp
@@ -358,7 +358,7 @@ void KMP_EXPAND_NAME(KMP_API_NAME_GOMP_ORDERED_END)(void) {
 // (IA-32 architecture) or 64-bit signed (Intel(R) 64).
 
 #if KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_MIPS || KMP_ARCH_WASM ||          \
-    KMP_ARCH_PPC || KMP_ARCH_AARCH64_32
+    KMP_ARCH_PPC || KMP_ARCH_AARCH64_32 || KMP_ARCH_SPARC32
 #define KMP_DISPATCH_INIT __kmp_aux_dispatch_init_4
 #define KMP_DISPATCH_FINI_CHUNK __kmp_aux_dispatch_fini_chunk_4
 #define KMP_DISPATCH_NEXT __kmpc_dispatch_next_4
diff --git a/openmp/runtime/src/kmp_os.h b/openmp/runtime/src/kmp_os.h
index 29a281f09685..e8ad2a6fdb78 100644
--- a/openmp/runtime/src/kmp_os.h
+++ b/openmp/runtime/src/kmp_os.h
@@ -179,11 +179,11 @@ typedef unsigned long long kmp_uint64;
 #endif /* KMP_OS_UNIX */
 
 #if KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_MIPS || KMP_ARCH_WASM ||          \
-    KMP_ARCH_PPC || KMP_ARCH_AARCH64_32
+    KMP_ARCH_PPC || KMP_ARCH_AARCH64_32 || KMP_ARCH_SPARC32
 #define KMP_SIZE_T_SPEC KMP_UINT32_SPEC
 #elif KMP_ARCH_X86_64 || KMP_ARCH_PPC64 || KMP_ARCH_AARCH64 ||                 \
     KMP_ARCH_MIPS64 || KMP_ARCH_RISCV64 || KMP_ARCH_LOONGARCH64 ||             \
-    KMP_ARCH_VE || KMP_ARCH_S390X
+    KMP_ARCH_VE || KMP_ARCH_S390X || KMP_ARCH_SPARC64
 #define KMP_SIZE_T_SPEC KMP_UINT64_SPEC
 #else
 #error "Can't determine size_t printf format specifier."
@@ -1052,7 +1052,8 @@ extern kmp_real64 __kmp_xchg_real64(volatile kmp_real64 *p, kmp_real64 v);
 
 #if KMP_ARCH_PPC64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64 || KMP_ARCH_MIPS ||     \
     KMP_ARCH_MIPS64 || KMP_ARCH_RISCV64 || KMP_ARCH_LOONGARCH64 ||             \
-    KMP_ARCH_VE || KMP_ARCH_S390X || KMP_ARCH_PPC || KMP_ARCH_AARCH64_32
+    KMP_ARCH_VE || KMP_ARCH_S390X || KMP_ARCH_PPC || KMP_ARCH_AARCH64_32 ||    \
+    KMP_ARCH_SPARC
 #if KMP_OS_WINDOWS
 #undef KMP_MB
 #define KMP_MB() std::atomic_thread_fence(std::memory_order_seq_cst)
diff --git a/openmp/runtime/src/kmp_platform.h b/openmp/runtime/src/kmp_platform.h
index 9ed14159376c..80afba6c6af2 100644
--- a/openmp/runtime/src/kmp_platform.h
+++ b/openmp/runtime/src/kmp_platform.h
@@ -129,6 +129,7 @@
 #define KMP_ARCH_LOONGARCH64 0
 #define KMP_ARCH_VE 0
 #define KMP_ARCH_S390X 0
+#define KMP_ARCH_SPARC 0
 
 #if KMP_OS_WINDOWS
 #if defined(_M_AMD64) || defined(__x86_64)
@@ -200,6 +201,9 @@
 #elif defined __s390x__
 #undef KMP_ARCH_S390X
 #define KMP_ARCH_S390X 1
+#elif defined __sparc || defined __sparc__
+#undef KMP_ARCH_SPARC
+#define KMP_ARCH_SPARC 1
 #endif
 #endif
 
@@ -246,6 +250,17 @@
 #define KMP_ARCH_PPC64                                                         \
   (KMP_ARCH_PPC64_ELFv2 || KMP_ARCH_PPC64_ELFv1 || KMP_ARCH_PPC64_XCOFF)
 
+#if defined(KMP_ARCH_SPARC)
+#undef KMP_ARCH_SPARC32
+#undef KMP_ARCH_SPARC64
+#if defined(__sparcv9) || defined(__sparc64__)
+#define KMP_ARCH_SPARC64 1
+#endif
+#if defined(__sparc) && !defined(__sparcv9) && !defined(__sparc64__)
+#define KMP_ARCH_SPARC32 1
+#endif
+#endif
+
 #if defined(__MIC__) || defined(__MIC2__)
 #define KMP_MIC 1
 #if __MIC2__ || __KNC__
@@ -264,7 +279,7 @@
 /* Specify 32 bit architectures here */
 #define KMP_32_BIT_ARCH                                                        \
   (KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_MIPS || KMP_ARCH_WASM ||           \
-   KMP_ARCH_PPC || KMP_ARCH_AARCH64_32)
+   KMP_ARCH_PPC || KMP_ARCH_AARCH64_32 || KMP_ARCH_SPARC32)
 
 // Platforms which support Intel(R) Many Integrated Core Architecture
 #define KMP_MIC_SUPPORTED                                                      \
@@ -275,7 +290,7 @@
               KMP_ARCH_AARCH64 + KMP_ARCH_MIPS + KMP_ARCH_MIPS64 +             \
               KMP_ARCH_RISCV64 + KMP_ARCH_LOONGARCH64 + KMP_ARCH_VE +          \
               KMP_ARCH_S390X + KMP_ARCH_WASM + KMP_ARCH_PPC +                  \
-              KMP_ARCH_AARCH64_32)
+              KMP_ARCH_AARCH64_32 + KMP_ARCH_SPARC)
 #error Unknown or unsupported architecture
 #endif
 
diff --git a/openmp/runtime/src/kmp_runtime.cpp b/openmp/runtime/src/kmp_runtime.cpp
index 64548b1397c3..9f679aa8d334 100644
--- a/openmp/runtime/src/kmp_runtime.cpp
+++ b/openmp/runtime/src/kmp_runtime.cpp
@@ -8978,7 +8978,7 @@ __kmp_determine_reduction_method(
        // KMP_OS_HURD || KMP_OS_SOLARIS || KMP_OS_WASI || KMP_OS_AIX
 
 #elif KMP_ARCH_X86 || KMP_ARCH_ARM || KMP_ARCH_AARCH || KMP_ARCH_MIPS ||       \
-    KMP_ARCH_WASM || KMP_ARCH_PPC || KMP_ARCH_AARCH64_32
+    KMP_ARCH_WASM || KMP_ARCH_PPC || KMP_ARCH_AARCH64_32 || KMP_ARCH_SPARC
 
 #if KMP_OS_LINUX || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD ||     \
     KMP_OS_OPENBSD || KMP_OS_WINDOWS || KMP_OS_HAIKU || KMP_OS_HURD ||         \