Two Egyptian and four exotic parental genotypes of okra were self pollinated for one generation and crossed in half diallel design to study heterosis and combining ability for earliness, vegetative and yield components traits. Mean squares of genotypes were found to be highly significant for all studied traits, providing evidence for presence of considerable amount of genetic variation among studied genotypes. The results showed that the majority of crosses exhibited significant heterosis estimates over mid parents for all studied traits. The general combining ability (GCA) and specific combining ability (SCA) mean squares were highly significant for all studied traits. Pusa Sewani (P ) was excellent general combiners for all studied traits 6 except average fruit weight per plant (gm). The cross combination (P xP ) showed desirable SCA effects and 1 6 significant heterosis values for all studied traits except number of branches per plant. These promising crosses could be used for constitution of okra hybrids