Ekeroma Tifaga Luaiufi, also spelled Lauaiufi (born 8 July 1963), is a former Samoan rugby union player, who also played for Japan.
He started to play for Samoa during a test match against Fiji, at Suva, on 22 August 1987.
Two years later, Luaiufi started to play for Japan in the match against Fiji, at Tokyo, on 4 March 1990.
He was part of the Japan team at 1991 Rugby World Cup, where he played three matches and scored a try in the match against Zimbabwe, at Belfast, on 14 October.
In his club career, he played for Canterbury in New Zealand and for NikoNikoDo, a team managed by Youme Mart, based in Kumamoto[3] in Japan.