Saufatu Sopoanga, OBE (born 22 February 1952) is a political figure from the Pacific nation of Tuvalu.
Sopoanga was the eighth Prime Minister of Tuvalu and a foreign minister of Tuvalu.
He is the elder brother of Enele Sopoaga, who was appointed as Prime Minister of Tuvalu in 2013.
There are no political parties in Tuvalu.
During his term as prime minister Sapoanga had a shifting alliance of MPs who supported him, and there was also an opposition group against him.
Both Sapoanga's group and the opposition group were plagued by defections; a series of by-elections also created uncertainty as to which side would emerge with a parliamentary majority.
The survival of his government has been described as resulting from his dexterous handling of the distribution of ministerial and other appointments.On 26 August 2004, while one of the 15 members of parliament was sick in New Zealand and another had defected from Sapoanga's group, the opposition finally Sapoanga to resign in a no confidence vote, 8–6.