Aminiasi Tuimaba (born 26 March 1995) is a Fiji national rugby sevens team player. He plays the wing position. He is known for his speed and try scoring. He finished the 2018/19 season as the top try scorer for the Fiji Sevens team and the 2nd top try scorer in the series, in his rookie season. He is from Yasawa and was a sprinter for Natabua High School. He currently plays in the Top 14 for Pau.
Tuimaba was part of the Fiji sevens team that won a silver medal at the 2022 Commonwealth Games.