U3 (Vienna U-Bahn)
| Line U3 U-Bahn-Linie U3 | |
|---|---|
| Line U3 train at Ottakring | |
| Overview | |
| Status | Operational | 
| Termini | |
| Connecting lines | |
| Stations | 21 | 
| Service | |
| Type | Rapid transit | 
| System | Vienna U-Bahn | 
| Operator(s) | Wiener Linien | 
| Depot(s) | Erdberg, Ottakring | 
| History | |
| Opened | 6 April 1991 | 
| Technical | |
| Line length | 13.4 km (8.3 mi) | 
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge | 
| Electrification | 750 V DC third rail | 
Line U3 is a line on the Vienna U-Bahn metro system. Opened in 1991, it currently has 21 stations and a total length of 13.4 km (8.3 mi), from Ottakring to Simmering, making it the shortest line on the network. It is connected to U1 at Stephansplatz, U2 at Volkstheater, U4 at Landstraße and U6 at Westbahnhof.
It is also currently the only Vienna U-Bahn Line not to be connected with the Badner Bahn.