Sir Eruera Tihema Te Aika Tirikatene KCMG (5 January 1895 – 11 January 1967) was a New Zealand Māori politician of the Ngāi Tahu tribe. Known in early life as Edward James Te Aika Tregerthen, he was the first Ratana Member of Parliament and was elected in a by-election for Southern Maori in June 1932 after the death of Tuiti Makitanara. He remained the MP until his death in 1967, when his daughter Whetu Tirikatene-Sullivan succeeded to the seat, also in a by-election.