Martyn Andrew Grimley (born 24 January 1963) is a former field hockey player
He won gold with the Great Britain squad at the 1988 Summer Olympics in Seoul. He also has World Cup silver medals with the England indoor and outdoor squads as well as a European Cup silver medal. He has a combined total of 178 international caps for England and Great Britain.
Grimley was born in Halifax, England. He taught Physical Education at Banbury School in Oxfordshire for a short time between 1986–87 and then taught Geography, Physical Education and Outdoor Education while at Dulwich College in London. Since returning from the Olympics in 1988 he joined Zurich Financial Services and has since become a company director running a successful financial services business based in Cheshire, 'Lee, Warriner & Co Ltd'. He is life member of Brooklands Manchester University Hockey Club.