| Birth Date: | 1994 1, mf=yes |
| Birth Place: | Exeter, Ontario, Canada |
| Height Ft: | 5 |
| Height In: | 8 |
| Weight Lb: | 132 |
| Position: | Forward |
| Shoots: | Left |
| Played For: | Shenzhen KRS Vanke Rays Vanke Rays Clarkson Golden Knights (NCAA) |
| Sex: | f |
| Ntl Team: | CAN |
| Career Start: | 2008 |
Cayley Mercer (born January 18, 1994) is a Canadian women's ice hockey player. She most recently played with the Shenzhen KRS Vanke Rays of the Canadian Women's Hockey League (CWHL) in the 2018–19 season.
Mercer played with the Clarkson Golden Knights women's ice hockey program from 2013 to 2017 and was a Top-3 Finalist for the 2017 Patty Kazmaier Award. Her career at Clarkson saw her win two Division 1 National Championships with the Golden Knights, and she graduated as the program's all-time leader in career goals scored, and second all time in career points.[1]
At the 2017 CWHL Draft, she was the first-ever player selected by the Vanke Rays, taken seventh overall.[2] In the 2017–18 CWHL season, Mercer finished second in the CWHL with 41 points in 28 games, behind only Kelli Stack.[3]