Mary Mattatall (born April 22, 1960 in Halifax, Nova Scotia) is a Canadian curler from Dartmouth, Nova Scotia.
Mattatall won the 1979 Nova Scotia junior women's title with teammates Faith Tregunno, Susan McCurdy and Debbie Jennex.
Mattatall has found the most success in her curling career representing Nova Scotia at the Canadian Mixed Curling Championship. She won the event twice, in 1995 and 1998, both times throwing third stones for skip Steve Ogden. She also placed second at the 1985 Canadian Mixed, throwing third for Dave Jones. She last played in the mixed at the 2014 Canadian Mixed Curling Championship playing third for Rob Harris, finishing in sixth place.
Mattatall won her first Nova Scotia Tournament of Hearts in 1989, playing third for Colleen Jones. At the 1989 Scott Tournament of Hearts, the Canadian national women's championship, the team would finish the round robin with a 7-4 record, and lost in a tiebreaker match. Mattatall returned to the national Tournament of Hearts in 1990 as an alternate for Heather Rankin, though she did not play in any games. The Jones rink would win the Nova Scotia Hearts in 1991 and would play at the 1991 Scott Tournament of Hearts, where they finished with a 5-6 record in 7th place. They won again in 1992 and finished with a 6-5 record (6th place) at the 1992 Scott Tournament of Hearts. Mattatall was invited to join the Jones rink as an alternate at the 1997 Scott Tournament of Hearts, the team finished with a 4-7 record, tied for 9th. Mattatall would play in one match.