| Tecklenburg Castle | |
|---|---|
| Tecklenburg | |
 The Mauritz Gate at Tecklenburg. In the centre of the coat of arms is Minerva, the tutelary goddess of the counts of Tecklenburg. | |
  | |
| Coordinates | 52°13′11″N 07°48′35″E / 52.21972°N 7.80972°E |
| Type | hill castle |
| Code | DE-NW |
| Height | 170 m above sea level (NN) |
| Site information | |
| Condition | ruin |
| Site history | |
| Built | c. 1100 |
Tecklenburg Castle (German: Burg Tecklenburg), or simply the Tecklenburg, is a ruined castle and venue for the Tecklenburg Open-Air Theatre in the eponymous town of Tecklenburg in the county of Steinfurt in the state of North Rhine-Westphalia, Germany. It was once the seat of the rulers of the County of Tecklenburg.