|Olympic medal record|
|Men's field hockey|
|1928 Amsterdam||Team competition|
George Eric McCarthy Marthins (24 December 1905 – 23 March 1989) was an Indian field hockey player who competed in the 1928 Summer Olympics as a member of the Indian field hockey team, which won the gold medal.
He studied at St. George's College, Mussoorie, India, which produced six Olympic hockey players (Earnest Goodsir-Cullen, William Goodsir-Cullen, Michael Gateley, Lionel Emmett, Carlyle Tapsell and Marthins himself).