Mathrin Simmers (born 3 March 1988) is a South African rugby sevens player.

Simmers competed for South Africa at the 2018 Commonwealth Games in Gold Coast, Queensland, Australia.

[1] She was selected again to represent South Africa at the 2018 Rugby World Cup Sevens in San Francisco.

[2] Simmers was named in South Africa's squad for the 2022 Commonwealth Games in Birmingham where they finished in seventh place.

[3][4][5] She was later selected to represent South Africa at the 2022 Rugby World Cup Sevens in Cape Town.