| Jack Umaga | |
| Fullname: | Jack Siaki Umaga |
| Birth Date: | 18 June 1984 |
| Birth Place: | Wellington, New Zealand |
| Weight: | 99kg (218lb) |
| Relatives: | Mike Umaga, Tana Umaga |
| Position: | Wing, Centre |
| Currentclub: | Știința Petroșani |
| Years1: | 2013–2021 |
| Clubs1: | Timișoara |
| Apps1: | 31 |
| Points1: | 31 |
| Years2: | 2022- |
| Clubs2: | Știința Petroșani |
| Apps2: | 3 |
| Points2: | 0 |
| Repyears1: | 2016– |
| Repteam1: | Romania |
| Repcaps1: | 17 |
| Reppoints1: | 10 |
| Ru Sevensnationalcomp1: | 2 |
| Ru Sevensnationalyears1: | 2018- |
| Ru Sevensnationalteam1: | Romania 7`s |
| Clubupdate: | 10 March 2017 |
| Repupdate: | 25 November 2017 |
Jack Umaga (born 18 June 1984) is a New Zealand-born Romanian rugby union football player. He plays in the wing or centre positions for amateur Liga Națională de Rugby club Știința Petroșani.[1] [2]
He also played for Romania's national team, the Oaks, making his international debut at the 2016 World Rugby Nations Cup in a match against the Welwitschias.[3]
Jack Umaga played for Sydenhan Rugby, Canterbury B, Mid-Canterbury, Tasman Makos and most recently for Hino Motors.
After joining Timișoara, Jack Umaga won the Romanian league 4 times and the Romanian cup also 4 times. He was also selected 17 times to play for the Romanian National Team.[4]