Carl Joseph Hayman is a retired New Zealand rugby player who played at tighthead prop, making 45 appearances for the All Blacks. Hayman has previously played for the Otago Highlanders in Super Rugby, Newcastle Falcons in the English Premiership, and French side Toulon, where he captained the side to victory in the 2015 European championship. Hayman announced his retirement from professional rugby in January 2015, aged 35, having played 445 games of professional rugby. Post retirement Hayman has been diagnosed with early-onset dementia and probable chronic traumatic encephalopathy. He lives in Taranaki, New Zealand.