F1 generations of an eight-parent diallel cross (including reciprocals) of bread wheat (Triticum aestivum L) were evaluated for combining ability for some important morphological traits at the experimental farm of Plant Breeding and Genetics Department, NWFP Agricultural University, Peshawar during 2002-03. The traits included days to 50% heading, flag leaf area, plant height, spike length, days to maturity and harvest index. The results indicated significant differences among the parents for general combining ability (GCA) and crosses for specific combining ability (SCA) for all the characters studied. Reciprocal combining ability (RCA) was significant for flag leaf area, plant height and harvest index. The GCA and SCA components of variance were significant for all the traits. However, the GCA component of variance was predominant indicating the importance of additive gene effects for the traits studied except flag leaf area for which SCA component of variance was predominant indicating the importance of non-additive gene effects for this trait. Tatara was the best general combiner for days to 50% heading and harvest index, Khattakwal, Ghaznavi-98, Inqilab-91 and Takbeer were the best general combiners for flag leaf area, plant height, spike length and days to maturity, respectively. The best crosses were, Tkb x Tat for days 50% heading, GZ x Inq for flag leaf area, FS x ID for plant height, Inq x PS for spike length, Tkb x ID for days to maturity and KW x GZ for harvest index. The utilization of reported best parents and cross combinations in wheat breeding programme could be the effective approach for the improvement of studied traits.