The present study is based on 350 women having sexually transmitted diseases and 68 men counterparts. Trichomonas vaginalis was a significant contributor in 216 (61.7%) out of 350 female SID cases' and in 56 (82.3%) out of 68 male counterparts. Further, out of 216 cases of T.vaginalis, 41 cases (32.5%) were associated with infection with Candida species; 29 (23%) with Neisseria gonorrhoea. 18 cases (14.3%) with Haemophilus ducreyi and 11 cases (8.7%), Chlamydia trachomatis. Treponema pallidum was observed in 8 cases (6.3%) which constituted a low percentage. Present study highlighted the importance of T. vaginalis by showing positivity in two-third cases which suggested that it can be an important indicator for other etiological STD agents in women.