diff --git a/src/backends/backendsCommon/test/CustomMemoryOptimizerStrategyTests.cpp b/src/backends/backendsCommon/test/CustomMemoryOptimizerStrategyTests.cpp
new file mode 100644
index 0000000..a5bf17c
--- /dev/null
+++ b/src/backends/backendsCommon/test/CustomMemoryOptimizerStrategyTests.cpp
@@ -0,0 +1,125 @@
+//
+// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include <armnn/IRuntime.hpp>
+#include <armnn/Utils.hpp>
+#include <armnn/BackendRegistry.hpp>
+
+#include <armnn/backends/IMemoryOptimizerStrategy.hpp>
+
+#if defined(ARMNNREF_ENABLED)
+#include <reference/RefBackend.hpp>
+#endif
+
+#if defined(ARMCOMPUTENEON_ENABLED)
+#include <neon/NeonBackend.hpp>
+#endif
+
+#include <doctest/doctest.h>
+
+
+// Sample implementation of IMemoryOptimizerStrategy..
+class SampleMemoryOptimizerStrategy : public armnn::IMemoryOptimizerStrategy
+{
+public:
+    SampleMemoryOptimizerStrategy() = default;
+
+    std::string GetName() const
+    {
+        return std::string("SampleMemoryOptimizerStrategy");
+    }
+
+    armnn::MemBlockStrategyType GetMemBlockStrategyType() const
+    {
+        return armnn::MemBlockStrategyType::SingleAxisPacking;
+    }
+
+    std::vector<armnn::MemBin> Optimize(std::vector<armnn::MemBlock>& memBlocks)
+    {
+        std::vector<armnn::MemBin> memBins;
+        memBins.reserve(memBlocks.size());
+        return memBins;
+    }
+};
+
+TEST_SUITE("CustomMemoryOptimizerStrategyTests")
+{
+
+// Only run this test if CpuRef is enabled
+#if defined(ARMNNREF_ENABLED)
+TEST_CASE("RefCustomMemoryOptimizerStrategyTest")
+{
+    using namespace armnn;
+
+    // Create ArmNN runtime
+    IRuntime::CreationOptions options; // default options
+    auto customMemoryOptimizerStrategy = std::make_shared<SampleMemoryOptimizerStrategy>();
+    options.m_MemoryOptimizerStrategyMap = {{"CpuRef", std::move(customMemoryOptimizerStrategy)}};
+    IRuntimePtr run = IRuntime::Create(options);
+
+    CHECK(!BackendRegistryInstance().GetMemoryOptimizerStrategies().empty());
+    CHECK(BackendRegistryInstance().GetMemoryOptimizerStrategies().size() == 1);
+    CHECK(BackendRegistryInstance().GetMemoryOptimizerStrategies().at(RefBackend::GetIdStatic()));
+    auto optimizerStrategy = BackendRegistryInstance().GetMemoryOptimizerStrategies().at(RefBackend::GetIdStatic());
+    CHECK(optimizerStrategy->GetName() == std::string("SampleMemoryOptimizerStrategy"));
+
+    // De-register the memory optimizer
+    BackendRegistryInstance().DeregisterMemoryOptimizerStrategy(RefBackend::GetIdStatic());
+    CHECK(BackendRegistryInstance().GetMemoryOptimizerStrategies().empty());
+
+}
+
+TEST_CASE("CpuRefSetMemoryOptimizerStrategyTest")
+{
+    using namespace armnn;
+
+    // Create ArmNN runtime
+    IRuntime::CreationOptions options; // default options
+    options.m_BackendOptions.emplace_back(
+         BackendOptions{"CpuRef",
+         {
+             {"MemoryOptimizerStrategy", "ConstLayerMemoryOptimizerStrategy"}
+         }
+    });
+
+    IRuntimePtr run = IRuntime::Create(options);
+
+    // ConstLayerMemoryOptimizerStrategy should be registered for CpuRef
+    CHECK(!BackendRegistryInstance().GetMemoryOptimizerStrategies().empty());
+    CHECK(BackendRegistryInstance().GetMemoryOptimizerStrategies().size() == 1);
+    CHECK(BackendRegistryInstance().GetMemoryOptimizerStrategies().at(RefBackend::GetIdStatic()));
+    auto optimizerStrategy = BackendRegistryInstance().GetMemoryOptimizerStrategies().at(RefBackend::GetIdStatic());
+    CHECK(optimizerStrategy->GetName() == std::string("ConstLayerMemoryOptimizerStrategy"));
+    armnn::BackendRegistryInstance().DeregisterMemoryOptimizerStrategy(RefBackend::GetIdStatic());
+}
+
+#endif
+
+// Only run this test if CpuAcc is enabled
+#if defined(ARMCOMPUTENEON_ENABLED)
+
+TEST_CASE("CpuAccSetMemoryOptimizerStrategyTest")
+{
+    using namespace armnn;
+
+    // Create ArmNN runtime
+    IRuntime::CreationOptions options; // default options
+    options.m_BackendOptions.emplace_back(
+         BackendOptions{"CpuAcc",
+         {
+             {"MemoryOptimizerStrategy", "NotExistMemoryOptimizerStrategy"}
+         }
+    });
+
+    IRuntimePtr run = IRuntime::Create(options);
+
+    // No MemoryOptimizerStrategy should be registered..
+    CHECK(armnn::BackendRegistryInstance().GetMemoryOptimizerStrategies().empty());
+    armnn::BackendRegistryInstance().DeregisterMemoryOptimizerStrategy(NeonBackend::GetIdStatic());
+}
+
+#endif
+
+} // test suite CustomMemoryOptimizerStrategyTests
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