Tamaʻāiga (meaning "sons of the families", alternatively spelled Tama-a-Aiga) is a Samoan term used to refer to the four high chiefly titles in the faʻamatai system of the Independent State of Samoa, they are the Malietoa, Mataʻafa, Tupua Tamasese and Tuimalealiʻifano.
American Samoa have its own paramount chiefs, known as Fa'asuaga, who are the sole authority of their districts, the Le'iato, Faumuina, Mauga, Tuitele, Fuimaono, Satele, Letuli, and Tui Manu'a.
Having been satisfied, the orator polity declared Fuiavailili was a 'tama a aiga', owing to his ancestry and links to the great families of Samoa and was subsequently proclaimed King.
By the last quarter of the 19th century, the status of the four dominant high chiefly dynasties – Malietoa, Mataʻafa, Tupua Tamasese, and Tuimalealiʻifano was formalized as tamaʻāiga.
Two other paramount chiefs – Fiamē Mataʻafa Faumuina Mulinuʻu II and Tupua Tamasese Lealofi IV – also each served as prime minister of Samoa.