Marsha Cox (née Marescia; born 13 January 1983 in Durban, KwaZulu-Natal) is a retired field hockey player from South Africa, who was a member of the national squad that finished 9th at the 2004 Summer Olympics in Athens.

She made her début in October 2001 at the age of 18 and has since gone on to represent her country at three Olympic Games and two World Cups, earning over 300 caps.

[2] After 14 years on the world stage, Marsha announced her retirement from international hockey in 2015.

Marsha attended Northlands Girls' High School in Durban North.

In 2013 Marsha married Dutch hockey coach Alexander Cox.