Junior Ratuva (born 15 February 1999) is a Fijian rugby union player, who plays for the . His preferred position is wing.
Ratuva attended King's College in Auckland before moving to Australia to play rugby league, joining the Melbourne Storm academy. He represented the Sunshine Coast Falcons and Redcliffe Dolphins before joining the New Zealand Warriors.
Before his stint with the Warriors, Ratuva was named in the squad for the 2019 Mitre 10 Cup, but did not make an appearance. He converted back to rugby union in 2022, joining , making 4 appearances and scoring two tries. He was called into the squad ahead of Round 2 of the 2024 Super Rugby Pacific season, making his debut against .