Sean Alfred Uilisi "Willis" Halaholo (born 6 July 1990) is a rugby union player who plays as a centre for the Cardiff Blues and the Wales national team. Born in Auckland, New Zealand, to parents of Tongan descent, he qualified to play for Wales on residency grounds after moving to the country in 2016. Earlier that year, he was part of the Hurricanes team that won its first ever Super Rugby title.