Tui Ātua Tupua Tamasese Efi

Tui Ātua Tupua Tamasese Tupuola Tufuga Efi (born Olaf "Efi" Tamasese) (born 1 March 1938), is a Samoan politician.

His Highness Tui Atua Tupua Tamasese Efi
O le Ao o le Malo of Samoa
In office 11 May 2007 – 21 July 2017 Acting: 11 May 2007 – 20 June 2007
Prime Minister	Tuilaepa Aiono Sailele Malielegaoi
Preceded by	Malietoa Tanumafili II
Succeeded by	Tuimalealiifano Va'aletoa Sualauvi II
Deputy Prime Minister of Western Samoa
In office 30 December 1985 – 8 April 1988
Prime Minister	Va'ai Kolone
Succeeded by	Tuilaepa Aiono Sailele Malielegaoi
3rd Prime Minister of Western Samoa
In office 18 September 1982 – 31 December 1982
O le Ao O le Malo	Malietoa Tanumafili II
Preceded by	Va'ai Kolone
Succeeded by	Tofilau Eti Alesana
In office 24 March 1976 – 13 April 1982
O le Ao O le Malo	Malietoa Tanumafili II
Preceded by	Lealofi IV (Acting)
Succeeded by	Va'ai Kolone
1st Minister of Foreign Affairs
In office 18 September 1982 – 31 December 1982
Preceded by	Va'ai Kolone
Succeeded by	Lauofo Meti
In office 24 March 1976 – 13 April 1982
Succeeded by	Va'ai Kolone
Constituency Member of the Samoan Parliament In office 7 February 1970 – 26 February 1988 Preceded by Taimalie Meapelo Succeeded by Alipia Siaosi Constituency Aana Alofi No. 2 In office May 1965 – 25 February 1967 Preceded by Masoe Tulele Succeeded by Va'ai Kolone Constituency Vaisigano No. 1
Personal details
Born	Olaf Efi Tamasese (1938-03-01) 1 March 1938 Motootua, Western Samoa (now Samoa)
Nationality	Samoan
Political party	Independent
Other political affiliations	National Development Party (1985–1988) Christian Democratic Party (1988–2003)
Spouse(s)	Masiofo Filifilia Imo Tamasese
Mother	Irene Gustava Noue Nelson
Father	Tupua Tamasese Meaʻole
Alma mater	Victoria University of Wellington

Tui Atua was Samoa's head of state (O le Ao o le Malo) from 2007 to 2017. He was Prime Minister of Samoa from 1976 to 1982 and again later in 1982. On 16 June 2007 he was elected as O le Ao o le Malo, Samoa's head of state, for a five-year term.