In this research, we have measured the radioactivity resulting from the Cesium-137 and Potassium-40 isotopes, in milk samples (from different sources) in Lattakia’s regions. It has been found that all samples were not contaminated by Cesium-137, but it was recorded that all samples containing radioactivity resulting from the Potasium-40 isotope with a magnitude range between , and average value . As compared with other world results, there was a good agreement between them, taking into account the errors in measurements.