Cathedral of Sts. Constantine and Helen
| Cathedral of Saints Constantine and Helen | |
|---|---|
Greek Orthodox Church in Hillbrow | |
| 26°11′39″S 28°03′04″E / 26.194167°S 28.0511°E | |
| Country | South Africa |
| Denomination | Greek Orthodox |
| Architecture | |
| Architect(s) | Hermann Kallenbach |
| Style | Byzantine |
| Completed | 1912 (Opened 5 January 1913) |
| Construction cost | £3,300 |
The Cathedral of Saints Constantine and Helen is a historical Greek Orthodox Church in Johannesburg, designed by architect Hermann Kallenbach and built in 1912. It is a SAHRA protected site.