| Birth Date: | 2 September 1958 |
| Birth Place: | Kharkiv, Ukraine |
| Death Place: | Kharkiv, Ukraine |
| Height: | 1.83m (06feet) |
| Weight: | 78kg (172lb) |
| Sport: | Swimming |
| Club: | Dynamo Kharkiv |
Oleksandr Fyodorovich Manachynskyi (Russian: Александр Федорович Маначинский, Ukrainian: Олександр Федорович Маначинський; 2 September 1958 – 1 January 2020) was a Ukrainian swimmer. He competed at the 1976 Summer Olympics in the 100 m and 200 m butterfly and finished eighth in the latter event. During his career he won three national titles, in the 100 m (1977) and 200 m (1976) butterfly and 4 × 100 m medley relay (1976).
Between 1975 and 2000 he worked as a swimming coach with the Soviet and then Ukrainian national teams.Manachynskyi died on 1 January 2020 at the age of 61.[1]