The present study was carried out to assess contamination of five heavy metals (As, Cd, Cr, Pb and Zn) in five different types of green leafy vegetables viz., mustard (Brassica campestris), garden crees (Lepidium sativum), fennel (Foeniculum vulgare), coriander (Coriandrum sativum), and spinach (Spinacea oleracea) collected from different market sites of Kathmandu. Atomic absorption spectrometer was used to determine the concentrations of these metals in a total of 45 test vegetables. Results showed a substantial accumulation of heavy metals in roots and leafy shoots of the vegetables. The range of various metals was 0.9-12.0, 2.7-12.5 and 16.8-158.7 mg kg-1 in roots and 3.2-19.1, 5.3-32.9 and 23.9-223.1 mg kg-1 in leafy shoots of the test vegetables for Cd, Pb and Zn respectively.