| Boom Prinsloo | |
| Full Name: | Johannes Gerhardus Pienaar Prinsloo |
| Birth Date: | 12 March 1989 |
| Birth Place: | Bloemfontein, South Africa |
| School: | Grey College, Bloemfontein |
| University: | University of the Free State |
| Position: | Flank / Number Eight |
| Youthyears1: | 2007–2010 |
| Years1: | 2010–2016 |
| Apps1: | 37 |
| Points1: | 60 |
| Years2: | 2011 |
| Apps2: | 1 |
| Points2: | 0 |
| Years3: | 2013 |
| Apps3: | 3 |
| Points3: | 25 |
| Years4: | 2012–2017 |
| Apps4: | 51 |
| Points4: | 70 |
| Years5: | 2017–2018 |
| Apps5: | 12 |
| Points5: | 35 |
| Years6: | 2017 |
| Apps6: | 8 |
| Points6: | 5 |
| Amatyears1: | 2010 |
| Amatapps1: | 8 |
| Amatpoints1: | 35 |
| Repyears1: | 2010–2012 |
| Repteam1: | South Africa Sevens |
| Repcaps1: | 7 |
| Clubupdate: | 13 July 2018 |
| Repupdate: | 13 April 2018 |
Johannes Gerhardus Pienaar "Boom" Prinsloo (born 12 March 1989) is a former South African rugby union player who regularly played as a loose forward. He made 51 appearances for the in Super Rugby from 2012 to 2017, and played domestically for the from 2010 to 2016 and for the in 2017 and 2018. He also played rugby sevens for South Africa from 2010 to 2012.
He retired from rugby in September 2018.[1]
Prinsloo is a Bloemfontein native and represented the in the Currie Cup and the in Super Rugby.
He previously played for the in the 2010 Varsity Cup where he notched up a seven tries in eight appearances and won the competitions' 'Player that Rocks' award.[2]
Prinsloo represented the Blitzbokke between 2010 and 2012 and played in a total of 7 IRB Sevens World Series tournaments.[3]