Forty five genotypes of cluster bean (Cyamopsis tetragonoloba (L.) Taub.) representing the broad spectrum of variation from various agro-climatic conditions of India were assessed for genetic divergence using Mahalanobis D2 technique. The genetic material exhibited wide range of genetic divergence for all 20 characters investigated. All the genotypes were grouped into eight clusters. The cluster I constituted maximum number (32) of genotypes followed by clusters II, III, IV, V, VI and VII with two genotypes each and the cluster VIII constituted with one genotype. The cluster VII with two genotypes showed maximum intra - cluster diversity (D2 = 314.851) followed by cluster I (D2 =306.519), VI (D2=296.274), V (D2 =168.581), IV (D2 = 97.195), III (D2 = 88.390) and II (D2 =59.911). The cluster VIII had no intracluster distance (D2=0.000) as that posses single genotype. Inter - cluster distance revealed the maximum divergence between cluster VII and VIII (D2 =1640.054) closely followed by cluster IV and VIII (D2 = 1552.597), cluster II and VIII (D2 =1388.251), cluster I and VI (1202.829), cluster I and VIII (D2 =1183.916) and cluster V and VIII (D2 =1178.135). The distance between cluster II and IV (D2 =155.094) was least. On the basis of inter-cluster distances and per se performances observed in hybridization programme for genotypes involving for specific characters can be choosen on the basis of cluster mean.