diff --git a/tests/validation/CPP/NonMaximaSuppression.cpp b/tests/validation/CPP/NonMaximaSuppression.cpp
new file mode 100644
index 0000000..eab5cec
--- /dev/null
+++ b/tests/validation/CPP/NonMaximaSuppression.cpp
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * 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.
+ */
+#include "NonMaximaSuppression.h"
+
+#include "Utils.h"
+#include "tests/validation/Helpers.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+template <typename T>
+SimpleTensor<T> non_maxima_suppression(const SimpleTensor<T> &src, BorderMode border_mode, T constant_border_value)
+{
+    constexpr int   block_size = 3;
+    SimpleTensor<T> dst(src.shape(), src.data_type(), src.num_channels());
+    ValidRegion     valid_region = shape_to_valid_region(src.shape(), border_mode == BorderMode::UNDEFINED, BorderSize(block_size / 2));
+
+    for(int i = 0; i < src.num_elements(); ++i)
+    {
+        Coordinates coord = index2coord(src.shape(), i);
+        int         x     = coord.x();
+        int         y     = coord.y();
+
+        if(!is_in_valid_region(valid_region, coord))
+        {
+            continue;
+        }
+
+        if(src[i] >= tensor_elem_at(src, Coordinates(x - 1, y - 1), border_mode, constant_border_value) && src[i] >= tensor_elem_at(src, Coordinates(x, y - 1), border_mode, constant_border_value)
+           && src[i] >= tensor_elem_at(src, Coordinates(x + 1, y - 1), border_mode, constant_border_value) && src[i] >= tensor_elem_at(src, Coordinates(x - 1, y), border_mode, constant_border_value)
+           && src[i] > tensor_elem_at(src, Coordinates(x + 1, y), border_mode, constant_border_value) && src[i] > tensor_elem_at(src, Coordinates(x - 1, y + 1), border_mode, constant_border_value)
+           && src[i] > tensor_elem_at(src, Coordinates(x, y + 1), border_mode, constant_border_value) && src[i] > tensor_elem_at(src, Coordinates(x + 1, y + 1), border_mode, constant_border_value))
+        {
+            dst[i] = src[i];
+        }
+        else
+        {
+            dst[i] = T(0);
+        }
+    }
+
+    return dst;
+}
+
+template SimpleTensor<float> non_maxima_suppression(const SimpleTensor<float> &src, BorderMode border_mode, float constant_border_value);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute