Abstract: Fertility restoration in three diverse CMS sources of sunflower was studied using fifty inbreds (testers). While 22 inbreds maintained sterility of CMS PET 1 and CMS ARG 1, 28 inbreds restored their fertility. The third CMS line GIG 1, was maintained by all the inbreds indicating involvement of different gene(s). Most of the commercial sunflower hybrids are been produced using CMS PET 1. Now with the identification of restorers for CMS ARG 1, new more productive commercial hybrids can be produced. Efforts should be made to locate restorers for CMS GIG 1 for its utilization in production of sunflower hybrids.