diff --git a/projects/hip-tests/catch/unit/memory/CMakeLists.txt b/projects/hip-tests/catch/unit/memory/CMakeLists.txt
index 02a95b758c..c79d278423 100644
--- a/projects/hip-tests/catch/unit/memory/CMakeLists.txt
+++ b/projects/hip-tests/catch/unit/memory/CMakeLists.txt
@@ -82,7 +82,9 @@ set(TEST_SRC
     hipMemsetD16.cc
     hipMemsetD16Async.cc
     hipMemsetD32Async.cc
-    hipMemsetD8Async.cc)
+    hipMemsetD8Async.cc
+    hipExtHostAlloc.cc
+    )
 
 if(UNIX)
   set(TEST_SRC ${TEST_SRC} hipMemPoolExportPointer.cc
diff --git a/projects/hip-tests/catch/unit/memory/hipExtHostAlloc.cc b/projects/hip-tests/catch/unit/memory/hipExtHostAlloc.cc
new file mode 100644
index 0000000000..4e5d849a9f
--- /dev/null
+++ b/projects/hip-tests/catch/unit/memory/hipExtHostAlloc.cc
@@ -0,0 +1,257 @@
+/*
+   Copyright (c) 2024 Advanced Micro Devices, Inc. All rights reserved.
+
+   Permission is hereby granted, free of charge, to any person obtaining a copy
+   of this software and associated documentation files (the "Software"), to deal
+   in the Software without restriction, including without limitation the rights
+   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+   copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+   THE SOFTWARE.
+ */
+
+/*
+This testfile verifies the following scenarios of hipExtHostAlloc API
+1. Basic scenario of hipExtHostAlloc API
+2. Negative Scenarios of hipExtHostAlloc API
+3. Allocating memory using hipExtHostAlloc with Coherent flag
+4. Allocating memory using hipExtHostAlloc with NonCoherent flag
+5. Allocating memory using hipExtHostAlloc with default flag
+*/
+
+#include <hip_test_checkers.hh>
+#include <kernels.hh>
+#include <hip_test_common.hh>
+#include <hip_test_context.hh>
+#include <hip_test_helper.hh>
+
+#define SYNC_EVENT 0
+#define SYNC_STREAM 1
+#define SYNC_DEVICE 2
+#define MEMORY_PERCENT 10
+#define BLOCK_SIZE 512
+#define VALUE 32
+
+namespace {
+std::vector<std::string> syncMsg = {"event", "stream", "device"};
+static constexpr int numElements{1024 * 16};
+static constexpr size_t sizeBytes{numElements * sizeof(int)};
+
+void CheckHostPointer(int numElements, int* ptr, unsigned eventFlags,
+                      int syncMethod, std::string msg) {
+    std::cerr << "test: CheckHostPointer "
+              << msg
+              << " eventFlags = " << std::hex << eventFlags
+              << ((eventFlags & hipEventReleaseToDevice) ?
+                 " hipEventReleaseToDevice" : "")
+              << ((eventFlags & hipEventReleaseToSystem) ?
+                 " hipEventReleaseToSystem" : "")
+              << " ptr=" << ptr << " syncMethod="
+              << syncMsg[syncMethod] << "\n";
+
+    hipStream_t s;
+    hipEvent_t e;
+
+    // Init:
+    HIP_CHECK(hipStreamCreate(&s));
+    HIP_CHECK(hipEventCreateWithFlags(&e, eventFlags))
+    dim3 dimBlock(64, 1, 1);
+    dim3 dimGrid(numElements / dimBlock.x, 1, 1);
+
+    const int expected = 13;
+
+    // Init array to know state:
+    HipTest::launchKernel(Set, dimGrid, dimBlock, 0, 0x0, ptr, -42);
+    HIP_CHECK(hipDeviceSynchronize());
+
+    HipTest::launchKernel(Set, dimGrid, dimBlock, 0, s, ptr, expected);
+    HIP_CHECK(hipEventRecord(e, s));
+
+    // Host waits for event :
+    switch (syncMethod) {
+        case SYNC_EVENT:
+            HIP_CHECK(hipEventSynchronize(e));
+            break;
+        case SYNC_STREAM:
+            HIP_CHECK(hipStreamSynchronize(s));
+            break;
+        case SYNC_DEVICE:
+            HIP_CHECK(hipDeviceSynchronize());
+            break;
+        default:
+            assert(0);
+    }
+
+    for (int i = 0; i < numElements; i++) {
+        if (ptr[i] != expected) {
+            printf("mismatch at %d: %d != %d\n", i, ptr[i], expected);
+            REQUIRE(ptr[i] == expected);
+        }
+    }
+
+    HIP_CHECK(hipStreamDestroy(s));
+    HIP_CHECK(hipEventDestroy(e));
+}
+}
+/*
+This testcase performs the basic scenario of hipExtHostAlloc API
+Allocates the memory using hipExtHostAlloc API
+Launches the kernel and performs vector addition.
+validates thes result.
+*/
+TEST_CASE("Unit_hipExtHostAlloc_Basic") {
+  static constexpr auto LEN{1024 * 1024};
+  static constexpr auto SIZE{LEN * sizeof(float)};
+
+  hipDeviceProp_t prop;
+  int device;
+  HIP_CHECK(hipGetDevice(&device));
+  HIP_CHECK(hipGetDeviceProperties(&prop, device));
+  if (prop.canMapHostMemory != 1) {
+    SUCCEED("Does support HostPinned Memory");
+  } else {
+    float *A_h, *B_h, *C_h;
+    float *A_d, *B_d, *C_d;
+    HIP_CHECK(hipExtHostAlloc(reinterpret_cast<void**>(&A_h), SIZE,
+                           hipHostAllocWriteCombined | hipHostAllocMapped));
+    HIP_CHECK(hipExtHostAlloc(reinterpret_cast<void**>(&B_h), SIZE,
+                           hipHostAllocDefault));
+    HIP_CHECK(hipExtHostAlloc(reinterpret_cast<void**>(&C_h), SIZE,
+                           hipHostAllocMapped));
+
+    HIP_CHECK(hipHostGetDevicePointer(reinterpret_cast<void**>(&A_d), A_h, 0));
+    HIP_CHECK(hipHostGetDevicePointer(reinterpret_cast<void**>(&C_d), C_h, 0));
+
+    HipTest::setDefaultData<float>(LEN, A_h, B_h, C_h);
+
+    HIP_CHECK(hipMalloc(reinterpret_cast<void**>(&B_d), SIZE));
+    HIP_CHECK(hipMemcpy(B_d, B_h, SIZE, hipMemcpyHostToDevice));
+
+    dim3 dimGrid(LEN / 512, 1, 1);
+    dim3 dimBlock(512, 1, 1);
+    HipTest::launchKernel<float>(HipTest::vectorADD<float>, dimGrid, dimBlock,
+            0, 0, static_cast<const float*>(A_d),
+            static_cast<const float*>(B_d), C_d, static_cast<size_t>(LEN));
+    HIP_CHECK(hipMemcpy(C_h, C_d, LEN*sizeof(float),
+                        hipMemcpyDeviceToHost));
+    HIP_CHECK(hipDeviceSynchronize());
+    HipTest::checkVectorADD<float>(A_h, B_h, C_h, numElements);
+
+    HIP_CHECK(hipHostFree(A_h));
+    HIP_CHECK(hipHostFree(B_h));
+    HIP_CHECK(hipHostFree(C_h));
+  }
+}
+
+/*
+This testcase verifies the hipExtHostAlloc API by
+1.Allocating memory using noncoherent flag
+2. Launches the kernel and modifies the variable
+   using different synchronization
+   techniquies
+3. validates the result.
+*/
+TEST_CASE("Unit_hipExtHostAlloc_NonCoherent") {
+  int* A = nullptr;
+  HIP_CHECK(hipExtHostAlloc(reinterpret_cast<void**>(&A),
+                          sizeBytes, hipExtHostAllocNonCoherent));
+  const char* ptrType = "non-coherent";
+  CheckHostPointer(numElements, A, hipEventReleaseToSystem,
+                   SYNC_DEVICE, ptrType);
+  CheckHostPointer(numElements, A, hipEventReleaseToSystem,
+                   SYNC_STREAM, ptrType);
+  CheckHostPointer(numElements, A, hipEventReleaseToSystem,
+                   SYNC_EVENT, ptrType);
+}
+
+/*
+This testcase verifies the hipExtHostAlloc API by
+1.Allocating memory using coherent flag
+2. Launches the kernel and modifies the variable
+   using different synchronization
+   techniquies
+3. validates the result.
+*/
+TEST_CASE("Unit_hipExtHostAlloc_Coherent") {
+  int* A = nullptr;
+  if (hipExtHostAlloc(reinterpret_cast<void**>(&A), sizeBytes,
+                    hipExtHostAllocCoherent) == hipSuccess) {
+    const char* ptrType = "coherent";
+    CheckHostPointer(numElements, A, hipEventReleaseToDevice,
+                     SYNC_DEVICE, ptrType);
+    CheckHostPointer(numElements, A, hipEventReleaseToDevice,
+                     SYNC_STREAM, ptrType);
+    CheckHostPointer(numElements, A, hipEventReleaseToDevice,
+                     SYNC_EVENT, ptrType);
+
+    CheckHostPointer(numElements, A, hipEventReleaseToSystem,
+                     SYNC_DEVICE, ptrType);
+    CheckHostPointer(numElements, A, hipEventReleaseToSystem,
+                     SYNC_STREAM, ptrType);
+    CheckHostPointer(numElements, A, hipEventReleaseToSystem,
+                     SYNC_EVENT, ptrType);
+  } else {
+    SUCCEED("Coherence memory allocation failed. Is SVM atomic supported?");
+  }
+}
+
+/*
+This testcase verifies the hipExtHostAlloc API by
+1.Allocating memory using default flag
+2. Launches the kernel and modifies the variable
+   using different synchronization
+   techniquies
+3. validates the result.
+*/
+TEST_CASE("Unit_hipExtHostAlloc_Default") {
+  int* A = nullptr;
+  HIP_CHECK(hipExtHostAlloc(reinterpret_cast<void**>(&A), sizeBytes));
+  const char* ptrType = "default";
+  CheckHostPointer(numElements, A, 0, SYNC_DEVICE, ptrType);
+  CheckHostPointer(numElements, A, 0, SYNC_STREAM, ptrType);
+  CheckHostPointer(numElements, A, 0, SYNC_EVENT, ptrType);
+}
+
+/**
+ * Performs argument validation of hipExtHostAlloc api.
+ */
+TEST_CASE("Unit_hipExtHostAlloc_ArgValidation") {
+
+  constexpr size_t allocSize = 1000;
+  char* ptr;
+
+  SECTION("Pass ptr as nullptr") {
+    HIP_CHECK_ERROR(hipExtHostAlloc(static_cast<void**>(nullptr), allocSize), hipErrorInvalidValue);
+  }
+
+  SECTION("Size as max(size_t)") {
+    HIP_CHECK_ERROR(hipExtHostAlloc(&ptr, (std::numeric_limits<std::size_t>::max)()),
+                    hipErrorMemoryAllocation);
+  }
+
+  SECTION("Flags as max(uint)") {
+    HIP_CHECK_ERROR(hipExtHostAlloc(&ptr, allocSize, (std::numeric_limits<unsigned int>::max)()),
+                    hipErrorInvalidValue);
+  }
+
+  SECTION("Pass size as zero and check ptr reset") {
+    HIP_CHECK(hipExtHostAlloc(&ptr, 0));
+    REQUIRE(ptr == nullptr);
+  }
+
+  SECTION("Pass hipExtHostAllocCoherent and hipExtHostAllocNonCoherent simultaneously") {
+    HIP_CHECK_ERROR(
+        hipExtHostAlloc(&ptr, allocSize, hipExtHostAllocCoherent | hipExtHostAllocNonCoherent),
+        hipErrorInvalidValue);
+  }
+}