| Yasuko Tajima | |
| Fullname: | Yasuko Tajima |
| Strokes: | Individual medley |
| Birth Date: | 8 May 1981 |
| Birth Place: | Kanagawa, Japan |
(born 8 May 1981 in Kanagawa) is a former medley swimmer from Japan. She won the silver medal in the 400m Individual Medley at the 2000 Summer Olympics in Sydney, Australia.