| Yaya Hartzenberg | |
| Fullname: | Vaasir Hartzenberg |
| Birth Date: | 6 January 1989 |
| Birth Place: | Cape Town, South AfricaSiblings Suleiman Hartzenberg and Munier Hartzenberg |
| Weight: | 1090NaN0 |
| School: | Paarl Boys' High School |
| University: | Boland College |
| Position: | Flanker |
| Youthyears1: | 2004–2010 |
| Years1: | 2009–2012 |
| Apps1: | 29 |
| Points1: | 30 |
| Years2: | 2013 |
| Apps2: | 0 |
| Points2: | 0 |
| Years3: | 2014 |
| Apps3: | 0 |
| Points3: | 0 |
| Years4: | 2019–present |
| Apps4: | 4 |
| Points4: | 0 |
| Amatyears1: | 2010 |
| Amatapps1: | 4 |
| Amatpoints1: | 20 |
| Amatyears2: | 2012 |
| Amatapps2: | 1 |
| Amatpoints2: | 0 |
| Repyears1: | 2006 |
| Repteam1: | S.A. Schools |
| Repyears2: | 2007 |
| Repteam2: | South Africa Under-19 |
| Repyears3: | 2009 |
| Repteam3: | South Africa Under-20 |
| Clubupdate: | 1 July 2019 |
| Repupdate: | 20 February 2014 |
Yaasier 'Yaya' Hartzenberg (born 6 January 1989) is a South African rugby union player for the in the Currie Cup and the Rugby Challenge.