Kavaia Tagivetaua (born 5 June 2003) is a Fijian rugby union player, who plays for the . His preferred position is hooker.
Tagivetaua is from Lomanikoro and attended Marist Brothers High School where he played rugby. He plays his Skipper Cup rugby for Naitasiri. In 2022 and 2023, he was named in the Fiji U20 side, captaining the side in 2023.
Tagivetaua had been a member of the development side in 2025, before being promoted to the full squad for the 2026 Super Rugby Pacific season. In November 2025, he made his debut for the Fiji national side, debuting as a replacement against Spain.