| Aminiasi Naituyaga | |
| Birth Date: | 23 June 1973 |
| Death Place: | Sigatoka River, Fiji |
| Height: | 6 ft 4 in |
| Weight: | 216 lb |
| School: | Sigatoka Mission School |
| Position: | Flanker / No. 8 |
| Repyears1: | 1997 |
| Repcaps1: | 4 |
| Reppoints1: | 0 |
Aminiasi Naituyaga (23 June 1973 – 6 March 2002) was a Fijian rugby union international.
A hard-tackling flanker from Nayawa village, Naituyaga was known by the nickname "Steelman".[1] He played on the Fiji side that won the 1997 Rugby World Cup Sevens and was capped four times that year for the Fiji XV, debuting against the All Blacks in North Shore City.[2] His son, also named Aminiasi, was a Fiji under-20s representative.[3]
Naituyaga died of drowning in 2002 while attempting to cross the Sigatoka River after a training session.[4]