Terrestrial gamma radiation is a significant component of natural background radiation, and accurate measurement is crucial for assessing radiation exposure in various environments. TLDs offer a reliable method for quantifying gamma radiation doses, providing a sensitive and versatile dosimetry tool. The application of thermoluminescence dosimeters has proven to be effective in capturing spatial and temporal variations of natural background radiation. The measurement of radiation dose rate in the Bishnupur District, Manipur contributes to the broader field of radiation monitoring, providing context to the local radiological environment from a global perspective. The average radiation absorbed dose rate of Bishnupur District is (0.800±0.087) mGy/yr with a maximum value of (1.021±0.054) mGy/yr and minimum of value of (0.640±0.015) mGy/yr.