Nafoitoa Mataia Valu Tala'imanu Keti is a Samoan politician and former Deputy Speaker of the Legislative Assembly of Samoa.

[3][4] In May 2019 he removed opposition MP Olo Fiti Vaai from the Finance and Expenditure Committee after he criticised government spending decisions.

[5][6] In March 2021 Keti was accused on EFKS-TV of attempting to rape a fellow police officer in 2007 when he was a supervisor at the Faleolo Police Outpost.

[7] The TV station was subsequently raided,[8] and his accuser arrested and charged with criminal libel.

[10] He stood in Gagaemauga No 2 at the April 2021 Samoan general election, but was unsuccessful.