A half-diallel experiment involving 11 parents was carried out using randomized block design with three replications to assess the combining ability and gene action for yield and its component traits in pea under agroclimatic conditions prevailing in the foot hills of northeast region of India. This region is characterized by high rainfall with acidic soil (pH < 5.5). The study revealed the importance of both additive and non-additive gene effects for all the traits with preponderance of non-additive gene effects for days to first picking, pods per plant, pod length, seeds per pod and seed yield per plant, but additive gene effects were found important in controlling for days to 50% flowering, plant height and 100-seed weight. Parents KPMR-728, Arkel, Rachna and CAUP-1 were good general combiners for seed yield and other component traits, which could be exploited to develop prolific pureline varieties of pea. The crosses HUDP-15 x KPMR-728, E-6 x Rachna, Pant P- 25 x KPMR-728 and Arkel x CAUP-1 were the best specific combiners involving either both or one of the parents. A high general combiner for seed yield may be included in recombination breeding to produce desirable segregants for developing high-yielding, acidic soil-tolerant genetic stock/varieties of pea. © Society for the Advancement of Breeding Research in Asia and Oceania (SABRAO) 2013.