The present investigation on G x E interaction was carried out with additive main effects and multiplicative interaction model to analyze the seed yield of 19 greengram genotypes inclusive of two check varieties viz., CO 8 and VBN(Gg) 3. All the 19 genotypes were evaluated for two years over four seasons viz., kharif 2015 and rabi 2015–16, kharif 2016 and rabi 2016–17 at National Pulses Research Centre, Vamban. Genotypes VBN(Gg) 3, VGG 15030 and VGG 15035 were less interacting genotypes with high seed yield. These genotypes may be recommended for both the seasons viz., kharif and rabi seasons. Among environments, kharif seasons are less interacting environment.