Te Maioha was born in Auckland on 1 February 1970, and was raised in Hastings in the Hawke's Bay Region of the North Island of New Zealand. His father was of Maori descent through both the Ngapuhi tribe, the largest in New Zealand, and the Waikato tribe, also known as the "Tainui" or "Waikato-Tainui."
Antonio Te Maioha started his career as a street performer before gaining a place at the Toi Whakaari Drama School in 1992. He went on to work with a Maori theatre project run by actor Jim Moriarty and was in the cast of Waiora, touring New Zealand, Hawaii and Britain.
One of Antonio Te Maioha's first significant television roles was in 1998 playing Boraxis in Hercules: The Legendary Journeys followed by guest roles in Xena: Warrior Princess and Legend of the Seeker, a weekly television series based on The Sword of Truth novels by Terry Goodkind." He has also appeared in other New Zealand-based television productions, including Shortland Street and The Lost World. Te Maioha has also had roles in several films, including Te Tangata Whai Rawa O Weneti and a short film called Taua (War Party)" and the 2000 film Feathers of Peace (Ngati Tama Warrior) directed by Barry Barclay.
In 2016 he was cast as minor role Maori Warrior in Zoolander 2.
Antonio Te Maioha is married and lives in the town of Raglan on the west coast of New Zealand's North Island. Active in local environmentalism, he has hosted a Sustainable Futures Forum in Waikato that brought around 80 people to discuss a variety of environmental issues. He has also publicly discussed his personal involvement and Raglan's leadership in recycling, citing the accomplishments of a local organization called Xtreme Waste. Te Maioha is uncomfortable with being labeled as a "greenie," saying that he is just doing "stuff everybody could" and that being given such a label means that other people will "write you off...instead of actually listening to what’s being said or applying changes in their own lives."
