Thomas Geoffrey Field (born 14 March 1997) is a professional footballer who most recently played as a left back for Canadian club Cavalry FC. A product of the Brentford Academy, Field graduated into the senior team in 2016. A fringe player, he departed to join Dundee in 2020. He moved to Canada to join Cavalry FC later that year. Born in England, Field was capped by the Republic of Ireland at U16 level.