Interspecific cross is a significant method for transferring desirable genes from wild to cultivated Vigna species. A varying level of crossability has been reported in Vigna radiata and other wild Vigna species. A total of 175 flowers were emasculated, with the highest number recorded in Vigna radiata var. sublobata and the lowest number (78) in V. pilosa crosses. A total of 141 flowers were pollinated in the V. radiata × V. radiata var. sublobata cross, while 72 flowers were pollinated in V. pilosa cross combinations. Thirty-five crossed pods were obtained in V. radiata var. sublobata, whereas only six pods were recorded in V. capensis and V. khandalensis. The highest number of seeds (240) was produced in V. radiata var. sublobata, while the lowest number (25) was observed in V. pilosa. Seed germination was highest in V. radiata var. sublobata, with 190 seeds germinated, and lowest in V. bournia, with only five seeds. The maximum crossed-seed germination percentage (79.2%) was recorded in V. radiata × V. radiata var. sublobata, whereas the minimum (12.5%) was noted in V. bournia. Plant survival was highest in V. radiata var. sublobata (170 plants) and lowest in V. khandalensis (three plants). At harvest, 152 plants were productive in V. radiata var. sublobata, while productivity was lowest in V. khandalensis. Hybrid breakdown was highest (89.4%) in the V. radiata × V. radiata var. sublobata cross and lowest (33.3%) in V. radiata × V. khandalensis. Hybrid sterility was highest (66.7%) in V. radiata × V. khandalensis and lowest (10.6%) in the V. radiata × V. radiata var. sublobata cross. The percentage of lethality among interspecific hybrids varied from 10.6 in V. radiate var sublobata to 66.7. The progressive results of this study provide an opportunity for the successful development of interspecific hybrids in Vigna breeding program.