Du'Plessis Ariu Kirifi (born 3 March 1997) is a New Zealand rugby union player who plays for the in Super Rugby and in the Bunnings NPC. His position is flanker. He has played for the Hurricanes since 2019.
He attended Francis Douglas Memorial College in New Plymouth and is of Samoan descent.
He is named after Morné du Plessis, former captain of the Springboks.