The performance of 15 F1 hybrids involving six groundnut (Arachis hypogaea L) varieties viz., 'R. W.,B4,G10 , No. 334','E4-52-4, and D5 of diverse origin was studied to investigate heterosis over mid and better parents for seed yield, pod number per plant, internode length, number of primary branches and number of secondary branches per plant. Positive heterosis over mid parents was shown by many crosses and over better parents by several crosses for all the characters studied. Seven crosses gave higher yields over their respective better parents but the yield was not significantly higher than the best parent, 'D5'. Although majority of crosses showed a fair degree of positive heterosis for various characters but yield was not substantial to offset the cost of hybrid seed production in groundnut.