Born: 19 June 1993 (Dysart, Queensland, Australia)
Junior Club: Ipswich Brothers
Johnson switched to rugby union in 2014, going on to play 22 Tests for Scotland between 2019 and 2022.
Under-20
| Team | Years | App | T | G | GK% | FG | Pts |
| Gold Coast | NYC 2012 | 20 | 4 | – | – | – | 16 |
| Gold Coast | NYC 2013 | 10 | 2 | 5 / 10 | 50.00% | – | 18 |
| Overall | 2012–2013 | 30 | 6 | 5 / 10 | 50.00% | – | 34 |
Under-18
| Team | Years | App | T | G | GK% | FG | Pts |
| Ipswich | Mal Meninga Cup 2010 | ? | 1 | 1 | – | – | 6 |
| Overall | 2010 | ? | 1 | 1 | – | – | 6 |
Under-16
| Team | Years | App | T | G | GK% | FG | Pts |
| Ipswich | Cyril Connell Cup 2009 | ? | 1 | 1 | – | – | 6 |
| Overall | 2009 | ? | 1 | 1 | – | – | 6 |