Pecularities of distribution of 40 HLA antigens within the Uzbek population of the Ferghana Valley have been studied. The frequencies of these antigens are subdivided into three main groups having frequencies characteristic of the following populations: Caucasoid population (A9, B40, Bw22 etc.); Mongoloid population (B8, B7, B12); Middle Asian population (Aw31, B13, B16, Bw35), probably. The Uzbek population contains haplotypes both of Europeoid (Aw30, B13; A3, Bw35) and Mongoloid origin (A9, B40) and, probably, of the local origin (A1, B14; A1, Bw53; Aw32, B40). The data on the HLA genetics of the Uzbeks confirm the historical, linguistic and anthropological information concerning the role of inhabitants of the Central Asia in ethnogenesis and formation of the modern Uzbek population.