| Birth Date: | 1988 2, df=y |
| Birth Place: | Windhoek |
| Weight: | 108kg (238lb) |
| Ru Currentposition: | Hooker |
| Ru Position: | Forward |
| Repyears1: | 2010–present |
| Repcaps1: | 11 |
| Reppoints1: | 0 |
Bertus O'Callaghan (born 18 February 1988) is a Namibian rugby union player. He competed with the Namibian national team at the 2011 Rugby World Cup. He was born in Windhoek.[1]