Combining ability analysis of 15 × 15 half-diallel set of crosses in Indian mustard revealed that non-additive gene effects were found to be predominant for secondary branches per plant, whereas preponderance of additive gene effects for the inheritance of rest of the characters. Maya, Kranti, PRB-2007-6 and PRB-2006-5were the good general combiners for different yield related traits. Among the cross combinations, PR-2006-1 × NDRE-4 expressed the highest sca effects for seed yield per plant followed by Maya × PRE-2004- 3-4 and Kranti × NDYR-8. For number of seeds per siliqua Ashirwad × NDYR-8 showed highly significant positive SCA effects ,Maya × PRE-2007-6 was best specific cross combination for test weight, whereas Vardan × Ashirwad was best specific cross combination for the oil content. Most of the crosses involving high × low general combining parents, exhibited high SCA effects for various traits. Hence, combining ability help in identification promising superior parents/hybrids could be used to exploit in the breeding programme for developing high yielding cultivars.