Thomas Raymond Prosser (2 March 1927 – 22 November 2020) was a Welsh international rugby union prop who played club rugby for Pontypool and was capped 22 times for Wales. Prosser also represented the British Lions in their 1959 tour of Australia and New Zealand, and played invitational rugby for the Barbarians. He is often remembered more for his coaching of an extremely successful Pontypool side during the 1970s and 1980s. Prosser died on 22 November 2020, at the age of 93.