The local varieties of onion (Allium cepa L.) viz. Bannu local, Bilot Kacha local, Dhakki local, Dhallah local, Naurang local, Paniyala local, Peshawar local, Shah Alam local, Swat-1 and Tank local were evaluated for seed production. The study was conducted at the Faculty of Agriculture, Gomal University, D.I. Khan during 1999. Data on different growth and seed yield parameters were recorded and statistically analyzed. Almost all growth parameters differed significantly (P=0.05) except flower stalk and umbel diameter. The highest seed weight per umbel (5.800 g) was harvest in the Peshawar local while the lowest (3.417 g) in Bannu local. The seed yield ha-1 and 1000 seed weight significantly (P=0.05) differed amongst the varieties. The highest seed yield (192.20 kg ha-1) was obtained in the Cv Naurang local which was statistically at per with Paniyala local, Shah Alam local and Swat-1 and significantly higher than the other varieties. The lowest seed yield 447.25 kg ha-1 was obtained from onion variety Tank local. The 1000 seeds weight of Naurang local, Shah Alam local and Swat-1 were found as the better seed yielders and are suitable for seed production under D.I.Khan condition.