Our present study investigated DNA sequence analysis of Human Papillomavirus (HPV) typc-33 in sexually active women. In present study 22 HPV-33 positive Endocervical specimens were obtained by use of Polymerase Chain Reaction (PCR), from total 500 participants, and further analyzed by DNA sequencing of the Long Control Region (LCR), E6 and E7 genes. For the genes LCR and E6 13 samples, for the gene E7 all 22 HPV-33 positive samples were sequenced by Applied Biosystcms. All 22 HPV-33 positive participants were Mongolian nationality. Most common Non-prototype-Likc variant in LCR is HPV-33 LCR-17 (11/13). one HPV-33 LCR-5 (1/13), and only one Prototype was found (1/13). In the E6, 12 samples were variant 33-E6-6 (12/13), and one prototype was found. lntheE7, 13 Prototype (13/22), 11 Non-prototype-Like variants were found. From the sequence result of gene sites in LCR, E6 and E7 most common HPV-33 variant in Mongolia is MN-17-6-0 (10/13), HPV-33 MN-0-6-0 (1/13), HPV-33 MN-5-6-0 (1/13) and one Montreal variant were found HPV-33 MT-17-0-0 (1/13). We identified 3 new variants of 11PV-33 which we called MN (Mongolia). From sequence result in 3 sites of genes, LCR is more variable compare with E6 and E7. F.6 were variable compare with E7. ' ' Health Sciences University of Mongolia, Ulaanhaatar, Mongolia 4,6 Department of Biochemistry and Molecular Biology, Nippon Medical School, Tokyo. Japan