diff --git a/test/ztest/unit/fast-get/CMakeLists.txt b/test/ztest/unit/fast-get/CMakeLists.txt
new file mode 100644
index 000000000000..45de96da341c
--- /dev/null
+++ b/test/ztest/unit/fast-get/CMakeLists.txt
@@ -0,0 +1,31 @@
+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(test_fast_get)
+
+set(SOF_ROOT "${PROJECT_SOURCE_DIR}/../../../..")
+
+# Include SOF CMake functions
+include(${SOF_ROOT}/scripts/cmake/misc.cmake)
+
+target_include_directories(app PRIVATE
+	${SOF_ROOT}/zephyr/include
+	${SOF_ROOT}/src/include
+	${SOF_ROOT}/src/platform/posix/include
+)
+
+# Define SOF-specific configurations for unit testing
+target_compile_definitions(app PRIVATE
+	-DCONFIG_SOF_LOG_LEVEL=CONFIG_LOG_DEFAULT_LEVEL
+	-DCONFIG_ZEPHYR_POSIX=1
+)
+
+target_sources(app PRIVATE
+	test_fast_get_ztest.c
+	${SOF_ROOT}/zephyr/lib/fast-get.c
+)
+
+target_link_libraries(app PRIVATE "-Wl,--wrap=rzalloc,--wrap=rmalloc,--wrap=rfree")
+
+# Add RELATIVE_FILE definitions for SOF trace functionality
+sof_append_relative_path_definitions(app)
diff --git a/test/ztest/unit/fast-get/prj.conf b/test/ztest/unit/fast-get/prj.conf
new file mode 100644
index 000000000000..9467c2926896
--- /dev/null
+++ b/test/ztest/unit/fast-get/prj.conf
@@ -0,0 +1 @@
+CONFIG_ZTEST=y
diff --git a/test/ztest/unit/fast-get/test_fast_get_ztest.c b/test/ztest/unit/fast-get/test_fast_get_ztest.c
new file mode 100644
index 000000000000..f43f9c1bbd14
--- /dev/null
+++ b/test/ztest/unit/fast-get/test_fast_get_ztest.c
@@ -0,0 +1,197 @@
+// SPDX-License-Identifier: BSD-3-Clause
+//
+// Copyright(c) 2025 Intel Corporation. All rights reserved.
+//
+// These contents may have been developed with support from one or more Intel-operated
+// generative artificial intelligence solutions.
+
+#include <zephyr/ztest.h>
+#include <sof/lib/fast-get.h>
+#include <stdlib.h>
+
+static const int testdata[33][100] = {
+	{
+	1, 2, 3, 4, 5, 6, 7, 9, 0,
+	1, 2, 3, 4, 5, 6, 7, 9, 0,
+	1, 2, 3, 4, 5, 6, 7, 9, 0,
+	1, 2, 3, 4, 5, 6, 7, 9, 0,
+	1, 2, 3, 4, 5, 6, 7, 9, 0,
+	1, 2, 3, 4, 5, 6, 7, 9, 0,
+	1, 2, 3, 4, 5, 6, 7, 9, 0,
+	1, 2, 3, 4, 5, 6, 7, 9, 0,
+	1, 2, 3, 4, 5, 6, 7, 9, 0,
+	1, 2, 3, 4, 5, 6, 7, 9, 0,
+	},
+	{ 2 },
+	{ 3 },
+	{ 4 },
+	{ 5 },
+	{ 6 },
+	{ 7 },
+	{ 8 },
+	{ 9 },
+	{ 10 },
+	{ 11 },
+	{ 12 },
+	{ 13 },
+	{ 14 },
+	{ 15 },
+	{ 16 },
+	{ 17 },
+	{ 18 },
+	{ 19 },
+	{ 20 },
+	{ 21 },
+	{ 23 },
+	{ 24 },
+	{ 25 },
+	{ 26 },
+	{ 27 },
+	{ 28 },
+	{ 29 },
+	{ 30 },
+	{ 31 },
+	{ 32 },
+	{ 33 },
+};
+
+/* Mock memory allocation functions for testing purposes */
+
+void *__wrap_rzalloc(uint32_t flags, size_t bytes)
+{
+	void *ret;
+	(void)flags;
+
+	ret = malloc(bytes);
+
+	zassert_not_null(ret, "Memory allocation should not fail");
+
+	memset(ret, 0, bytes);
+
+	return ret;
+}
+
+void *__wrap_rmalloc(uint32_t flags, size_t bytes)
+{
+	void *ret;
+	(void)flags;
+
+	ret = malloc(bytes);
+
+	zassert_not_null(ret, "Memory allocation should not fail");
+
+	return ret;
+}
+
+void __wrap_rfree(void *ptr)
+{
+	free(ptr);
+}
+
+/**
+ * @brief Test basic fast_get and fast_put functionality
+ *
+ * Tests that fast_get can allocate memory for data and fast_put can free it.
+ * Verifies that the returned pointer is valid and data is correctly copied.
+ */
+ZTEST(fast_get_suite, test_simple_fast_get_put)
+{
+	const void *ret;
+
+	ret = fast_get(testdata[0], sizeof(testdata[0]));
+
+	zassert_not_null(ret, "fast_get should return valid pointer");
+	zassert_mem_equal(ret, testdata[0], sizeof(testdata[0]),
+			  "Returned data should match original data");
+
+	fast_put(ret);
+}
+
+/**
+ * @brief Test fast_get size mismatch behavior
+ *
+ * Tests that fast_get returns NULL when requested size doesn't match
+ * previously allocated size for the same data pointer.
+ */
+ZTEST(fast_get_suite, test_fast_get_size_missmatch_test)
+{
+	const void *ret[2];
+
+	ret[0] = fast_get(testdata[0], sizeof(testdata[0]));
+
+	zassert_not_null(ret[0], "First fast_get should succeed");
+	zassert_mem_equal(ret[0], testdata[0], sizeof(testdata[0]),
+			  "Returned data should match original data");
+
+	ret[1] = fast_get(testdata[0], sizeof(testdata[0]) + 1);
+	zassert_is_null(ret[1], "fast_get with different size should return NULL");
+
+	fast_put(ret[0]);
+}
+
+/**
+ * @brief Test multiple fast_get and fast_put operations
+ *
+ * Tests that fast_get can handle more than 32 allocations and that
+ * all data is correctly stored and can be retrieved.
+ */
+ZTEST(fast_get_suite, test_over_32_fast_gets_and_puts)
+{
+	const void *copy[ARRAY_SIZE(testdata)];
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(copy); i++)
+		copy[i] = fast_get(testdata[i], sizeof(testdata[0]));
+
+	for (i = 0; i < ARRAY_SIZE(copy); i++)
+		zassert_mem_equal(copy[i], testdata[i], sizeof(testdata[0]),
+				  "Data at index %d should match original", i);
+
+	for (i = 0; i < ARRAY_SIZE(copy); i++)
+		fast_put(copy[i]);
+}
+
+/**
+ * @brief Test fast_get reference counting functionality
+ *
+ * Tests that fast_get implements proper reference counting - multiple
+ * fast_get calls for the same data should return the same pointer,
+ * and the data should remain valid until all references are released.
+ */
+ZTEST(fast_get_suite, test_fast_get_refcounting)
+{
+	const void *copy[2][ARRAY_SIZE(testdata)];
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(copy[0]); i++)
+		copy[0][i] = fast_get(testdata[i], sizeof(testdata[0]));
+
+	for (i = 0; i < ARRAY_SIZE(copy[0]); i++)
+		copy[1][i] = fast_get(testdata[i], sizeof(testdata[0]));
+
+	for (i = 0; i < ARRAY_SIZE(copy[0]); i++)
+		zassert_equal_ptr(copy[0][i], copy[1][i],
+				  "Same data should return same pointer (refcounting)");
+
+	for (i = 0; i < ARRAY_SIZE(copy[0]); i++)
+		zassert_mem_equal(copy[0][i], testdata[i], sizeof(testdata[0]),
+				  "Data should match original after multiple fast_get calls");
+
+	/* Release first set of references */
+	for (i = 0; i < ARRAY_SIZE(copy[0]); i++)
+		fast_put(copy[0][i]);
+
+	/* Data should still be valid through second set of references */
+	for (i = 0; i < ARRAY_SIZE(copy[0]); i++)
+		zassert_mem_equal(copy[1][i], testdata[i], sizeof(testdata[0]),
+				  "Data should remain valid after partial fast_put");
+
+	/* Release second set of references */
+	for (i = 0; i < ARRAY_SIZE(copy[0]); i++)
+		fast_put(copy[1][i]);
+}
+
+/**
+ * @brief Define and initialize the fast_get test suite
+ */
+ZTEST_SUITE(fast_get_suite, NULL, NULL, NULL, NULL, NULL);
diff --git a/test/ztest/unit/fast-get/testcase.yaml b/test/ztest/unit/fast-get/testcase.yaml
new file mode 100644
index 000000000000..458febdd9f09
--- /dev/null
+++ b/test/ztest/unit/fast-get/testcase.yaml
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: BSD-3-Clause
+#
+# Copyright(c) 2025 Intel Corporation. All rights reserved.
+#
+# These contents may have been developed with support from one or more Intel-operated
+# generative artificial intelligence solutions.
+
+tests:
+  fast_get.basic_functionality:
+    tags: fast_get memory cache
+    platform_allow: native_sim
+    integration_platforms:
+      - native_sim
+    build_only: false