Mary Riddell (born 1980) is an American Paralympic alpine skier.

[2] Riddell won the gold medal in the LW3,4,5 / 7,6 giant slalom competition, with a time of 2:41.35, better than opponents Karolina Wisniewska (2: 41.82) and Ramona Hoh (2: 42.06), at the 1998 Nagano Winter Paralympics.

[4]  She won two bronze medals in the slalom (achieved time 2: 04.17),[5] and super-G LW3,4,5 / 7,6 / 8 (in 1: 05.80).

[6] At the 2002 Paralympic Winter Games in Salt Lake City, Riddell won the gold medal in the giant slalom LW3,4,9 (silver medal for Karolina Wisniewska and bronze for Lauren Woolstencroft),[7]  and silver in the alpine super combined LW3,4,6 / 8,9 (in 1st place Woolstencroft and in 3rd place Wisniewska).

[9] She finished second in giant slalom at the 2000 Hartford Ski Spectacular, behind Sarah Will.