diff --git a/cmake/OpenCVCompilerOptimizations.cmake b/cmake/OpenCVCompilerOptimizations.cmake
index 0c77f4505d..cc57cbdcae 100644
--- a/cmake/OpenCVCompilerOptimizations.cmake
+++ b/cmake/OpenCVCompilerOptimizations.cmake
@@ -26,7 +26,7 @@
 #
 # CPU_DISPATCH_FLAGS_${opt} - flags for source files compiled separately (<name>.avx2.cpp)
 
-set(CPU_ALL_OPTIMIZATIONS "SSE;SSE2;SSE3;SSSE3;SSE4_1;SSE4_2;POPCNT;AVX;FP16;AVX2;FMA3") # without AVX512
+set(CPU_ALL_OPTIMIZATIONS "SSE;SSE2;SSE3;SSSE3;SSE4_1;SSE4_2;POPCNT;AVX;FP16;AVX2;FMA3;AVX512")
 list(APPEND CPU_ALL_OPTIMIZATIONS NEON VFPV3 FP16)
 list(APPEND CPU_ALL_OPTIMIZATIONS VSX)
 list(REMOVE_DUPLICATES CPU_ALL_OPTIMIZATIONS)
@@ -145,7 +145,7 @@ elseif(" ${CMAKE_CXX_FLAGS} " MATCHES " -march=native | -xHost | /QxHost ")
 endif()
 
 if(X86 OR X86_64)
-  ocv_update(CPU_KNOWN_OPTIMIZATIONS "SSE;SSE2;SSE3;SSSE3;SSE4_1;POPCNT;SSE4_2;FP16;FMA3;AVX;AVX2") # without AVX512
+  ocv_update(CPU_KNOWN_OPTIMIZATIONS "SSE;SSE2;SSE3;SSSE3;SSE4_1;POPCNT;SSE4_2;FP16;FMA3;AVX;AVX2;AVX512")
 
   ocv_update(CPU_SSE_TEST_FILE "${OpenCV_SOURCE_DIR}/cmake/checks/cpu_sse.cpp")
   ocv_update(CPU_SSE2_TEST_FILE "${OpenCV_SOURCE_DIR}/cmake/checks/cpu_sse2.cpp")
diff --git a/modules/core/include/opencv2/core/cv_cpu_dispatch.h b/modules/core/include/opencv2/core/cv_cpu_dispatch.h
index 5261a41439..75f6ca9c7d 100644
--- a/modules/core/include/opencv2/core/cv_cpu_dispatch.h
+++ b/modules/core/include/opencv2/core/cv_cpu_dispatch.h
@@ -82,6 +82,10 @@
 #  include <immintrin.h>
 #  define CV_AVX2 1
 #endif
+#ifdef CV_CPU_COMPILE_AVX512
+#  include <immintrin.h>
+#  define CV_AVX512 1
+#endif
 #ifdef CV_CPU_COMPILE_FMA3
 #  define CV_FMA3 1
 #endif
diff --git a/modules/core/include/opencv2/core/cv_cpu_helper.h b/modules/core/include/opencv2/core/cv_cpu_helper.h
index 66a473f1e1..1c7dbaf852 100644
--- a/modules/core/include/opencv2/core/cv_cpu_helper.h
+++ b/modules/core/include/opencv2/core/cv_cpu_helper.h
@@ -165,6 +165,21 @@
 #endif
 #define __CV_CPU_DISPATCH_CHAIN_FMA3(fn, args, mode, ...)  CV_CPU_CALL_FMA3(fn, args); __CV_EXPAND(__CV_CPU_DISPATCH_CHAIN_ ## mode(fn, args, __VA_ARGS__))
 
+#if !defined CV_DISABLE_OPTIMIZATION && defined CV_ENABLE_INTRINSICS && defined CV_CPU_COMPILE_AVX512
+#  define CV_TRY_AVX512 1
+#  define CV_CPU_HAS_SUPPORT_AVX512 1
+#  define CV_CPU_CALL_AVX512(fn, args) return (opt_AVX512::fn args)
+#elif !defined CV_DISABLE_OPTIMIZATION && defined CV_ENABLE_INTRINSICS && defined CV_CPU_DISPATCH_COMPILE_AVX512
+#  define CV_TRY_AVX512 1
+#  define CV_CPU_HAS_SUPPORT_AVX512 (cv::checkHardwareSupport(CV_CPU_AVX512))
+#  define CV_CPU_CALL_AVX512(fn, args) if (CV_CPU_HAS_SUPPORT_AVX512) return (opt_AVX512::fn args)
+#else
+#  define CV_TRY_AVX512 0
+#  define CV_CPU_HAS_SUPPORT_AVX512 0
+#  define CV_CPU_CALL_AVX512(fn, args)
+#endif
+#define __CV_CPU_DISPATCH_CHAIN_AVX512(fn, args, mode, ...)  CV_CPU_CALL_AVX512(fn, args); __CV_EXPAND(__CV_CPU_DISPATCH_CHAIN_ ## mode(fn, args, __VA_ARGS__))
+
 #if !defined CV_DISABLE_OPTIMIZATION && defined CV_ENABLE_INTRINSICS && defined CV_CPU_COMPILE_NEON
 #  define CV_TRY_NEON 1
 #  define CV_CPU_HAS_SUPPORT_NEON 1