Siale Lauaki (born 30 May 2003) is a New Zealand rugby union player, who plays for the and . His preferred position is prop.
Lauaki attended St Patrick's College, Wellington where he was named College Sport Wellington Sportsman of the year, following being named in the New Zealand Schools side. He was selected for the New Zealand U20s in 2023.
Lauaki has represented in the National Provincial Championship since 2022, being named in their full squad for the 2023 Bunnings NPC. He was named in the squad for the 2024 Super Rugby Pacific season.