Mary Grigson (born 3 June 1971)[2] is an Australian cross-country mountain biker.

Grigson participated in the 1996 Summer Olympics in Atlanta coming 15th in the women's Cross-country event.

She also competed in the women's Cross-country event at the 2000 Summer Olympics in Sydney where she came 6th.

[3] She won a bronze medal at the 2002 Commonwealth Games in the cross-country event.

This biographical article relating to Australian cycling is a stub.