Abstract: 137Cs is a radionuclide that can accumulate in soil and plants and is potentially hazardous to humans. When 137Cs enters the human body, it will be distributed to soft tissues such as muscle and bone tissue. This study aims to determine the concentration of radionuclide 137Cs in soil and rice (Oryza sativa) in the Pandeglang Regency. Soil samples were dried at 105 ˚C, ground, sieved, and put into a Marinelli beaker.