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The activ ity concentrations of naturally occurring radionuclides 226 Ra, 232 Th and 40 K, were measured by using a Broad Energy Ge (BEGe) detector for soil samples collected fro m the Malnichara tea garden in Sylhet district of Bangladesh. The average activity concentrations of 226 Ra, 232 Th and 40 K in soil samples were found to be 55.284±4.68, 125.270±5.81 and 497.91±43.83 Bqkg-1 , respectively. The results obtained for the corresponding nuclides are slightly higher than the world wide average values of 35, 30, and 400 Bqkg-1 , respectively. The average outdoor absorbed dose and the annual effective dose rates due to 226 Ra, 232 Th and 40 K were observed to be 124.12 ± 7.59 n Gyh-1 and 152.22±9.31 µSvy-1 , respectively; which are above the world average. Whereas, the radium equivalent activity and external hazard indices are less than the world average values.