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A study was conducted to estimate yield losses in mung bean (Vigna radiata cultivars NM 19-19, MN 20-21, NM 13-1 and 6601) and mash bean (Vigna mungo cv. Mash-48) caused by different insect pests and to identify the most tolerant to insect pests. Significantly higher populations of whitefly (Bemisia tabaci), jassid (Amrasca devastans [A. biguttula biguttula]), thrips (Thrips tabaci), aphids (Aphis craccivora), Heliothis armigera [Helicoverpa armigera] and tetranychus mites (Tetranychus urticae) were recorded on NM 13-1. The remaining cultivars were statistically at par with one another in respect of whitefly, thrips and gram pod borer. Significantly lower population of jassid and aphid was observed on NM 19-19. NM 13-1 showed comparatively higher yield loss (18.31%), followed by Mash-48 (17.42%) and 6601 (15.9%). NM 19-19 showed comparatively lower yield loss (7.77%), followed by NM 20-21 (9.20%).