Dallas Johnson is an Australian professional rugby league footballer for the North Queensland Cowboys in the National Rugby League and formerly the Melbourne Storm and Catalans Dragons. He plays primarily as a lock forward.
Between 2007 and 2009, Johnson played in four consecutive NRL grand finals for the Melbourne Storm. Melbourne won the 2007 and 2009 grand finals. He has represented the Queensland State of Origin team and played one match for the Australian national team. He is known for his prolific tackling.