| Country: | LUX |
| Type: | A |
| Route: | 1 |
| Alternate Name: | Autoroute de Trèves |
| Map: | Luxembourg A1.png |
| Length Km: | 36.203 |
| Length Round: | 3 |
| Direction A: | Western |
| Terminus A: | Croix de Gasperich for Luxembourg City, A3, A6 |
| Direction B: | Eastern |
| Junction: | Kirchberg Luxembourg Airport Munsbach Mertert Wasserbillig |
| Terminus B: |  Sauer Valley Bridge & Bundesautobahn 64 for Trier |
| Formed: | 1969 |
| History: | Completed: 23 September 1996 |
The Autoroute 1, abbreviated to A1 or otherwise known as the Trier motorway (Luxembourgish; Letzeburgesch: Tréierer Autobunn, French: Autoroute de Trèves), is a motorway in Luxembourg. It is 36.203km (22.496miles) long and connects Luxembourg City, in the south, to Wasserbillig, in the east. A few hundred metres to the north of Wasserbillig, it reaches the German border, whereupon it becomes the A64, which leads to Trier.
Originally a connection from Luxembourg City to Luxembourg Airport, at Senningerberg, in 1969, the A1 was extended in three stages from 1988 to 1992 to connect to the German border. From 1994 to 1996, two more sections were opened, bypassing the south-east of Luxembourg City and connecting the A1 to the Croix de Gasperich, where it meets the A3 (to Dudelange) and A6 (towards Arlon, in Belgium).
In all, the A1 was opened in six separate sections:
| Junctions and structures | |||
| Croix de Gasperich | / | ||
| Howald Tunnel | |||
| Victor Bodson Bridge | |||
| (J7) | Hamm / Sandweiler | ||
| Cents Tunnel | |||
| Neudorf Viaduct | |||
| / (J8) | Kirchberg / Grunewald Junction | / | |
| (J9) | Senningerberg / Airport | ||
| (J10) | Cargo Centre | ||
| (J11) | Munsbach | ||
| Syre Viaduct | |||
| (J12) | Flaxweiler | ||
| (J13) | Potaschbierg | ||
| (J14) | Mertert | ||
| (J15) | Wasserbillig | ||
| / | Wasserbillig services | ||
| Border with Germany |