| Country: | LUX |
| Type: | A |
| Route: | 13 |
| Alternate Name: | Liaison avec la Sarre Collectrice du Sud |
| Map: | Luxembourg A13.png |
| Length Km: | 42.310 |
| Length Round: | 3 |
| Direction A: | West |
| Terminus A: | Pétange |
| Direction B: | East |
| Terminus B: |  Bundesautobahn 8 for Saarlouis |
| Junction: | Sanem Differdange Schifflange Frisange Mondorf-les-Bains Schengen |
| Formed: | December 1990 |
| History: | Completed on 24 July 2003 |
The Autoroute 13, abbreviated to A13, is a motorway in southern Luxembourg. It is 42.31km (26.29miles) long and connects Pétange to Schengen, via all the largest towns in the Red Lands. At Schengen, it reaches the German border, whereupon it meets the A8, which crosses southern Germany.
For its western 20.4 kilometres, until it reaches Lankelz, it is known as the South collector road (French: Collectrice du Sud). For its eastern 21.9 kilometres, it is known as the Connection with the Saar (French: Liaison avec la Sarre), or Saar Autobahn (Luxembourgish; Letzeburgesch: Saarautobunn).
In all, the A13 was opened in eight separate sections:
| Junctions and structures | |||
| Biff roundabout | / | ||
| (J1) | Bascharage | ||
| (J2) | Sanem | ||
| (J3) | Differdange | ||
| Aessen Tunnel | |||
| Ehlerange Tunnel | |||
| (J4) | Ehlerange | ||
| Lankelz Junction | |||
| (J5) | Lallange | ||
| Esch Junction | |||
| (J6) | Schifflange | ||
| (J7) | Kayl | ||
| (J8) | Burange | ||
| Croix de Bettembourg | |||
| (J9) | Hellange | ||
| Frisange Tunnel | |||
| (J10) | Frisange | ||
| (J11) | Altwies | ||
| Altwies Viaduct | |||
| Mondorf-les-Bains Tunnel | |||
| (J12) | Mondorf-les-Bains | ||
| Markusbierg Tunnel | |||
| (J13) | Schengen | ||
| Schengen Viaduct | |||
| Border with Germany |