| Jen Button | |
| Fullname: | Jennifer Button |
| Nicknames: | "Jen" |
| Strokes: | Butterfly, freestyle |
| Club: | Region of Waterloo |
| Birth Date: | October 15, 1977 |
| Birth Place: | Comox, British Columbia |
| Height: | 1.63m (05.35feet) |
| Weight: | 55kg (121lb) |
Jennifer Button (born October 15, 1977) is a former female butterfly and freestyle swimmer from Canada, who competed for her native country at the 2000 Summer Olympics in Sydney, Australia. Her best result was finishing in fifth place in the women's 4x200-metre freestyle relay event.