Sinikka Marja-Liisa Keskitalo (29 January 1951 - 25 October 2011) was a female long-distance runner from Finland. She competed in the women's marathon for her native country at two consecutive Summer Olympics, starting in 1984. Her best result was the 15th place at the 1984 Summer Olympics in Los Angeles, California. She was born in Jalasjärvi.
| Representing | ||||||
|---|---|---|---|---|---|---|
| 1982 | Athens, Greece | 15th | Marathon | 2:48:54 | ||
| 1983 | Helsinki, Finland | 27th | Marathon | 2:46:10 | ||
| 1984 | Los Angeles, United States | 15th | Marathon | 2:35:15 | ||
| 1986 | Stuttgart, West Germany | 4th | Marathon | |||
| 1987 | Rome, Italy | 8th | Marathon | 2:35:16 | ||
| 1988 | Seoul, South Korea | 42nd | Marathon | 2:43:00 | ||