Peter Marrin (born August 8, 1953 in Toronto, Ontario) is a retired professional ice hockey centre who played 277 games in the World Hockey Association. He played with the Toronto Toros and Birmingham Bulls. He played for the Toronto Marlboros from 1970 to 1973, winning the Memorial Cup in 1973. The Montreal Canadiens picked him 22nd overall in the 1973 NHL Amateur Draft while the Toronto Toros chose him 44th overall in the 1973 WHA Amateur Draft. He played for the new Bulls team in the Central Hockey League in 1979-80. Marrin played two more seasons in the minor pros and retired in 1982.