| Country: | ESP |
| Type: | Autovia |
| Route: | A-6 |
| Alternate Name: | Autovía/Autopista del Noroeste |
| Map: | Autoviaesp a6.PNG |
| Length Km: | 590 |
| Terminus A: | Madrid |
| Terminus B: | Arteixo |
The Autovía A-6 or Autopista AP-6 (also called Autovía del Noroeste) (Galician: Autovía do Noroeste) is a Spanish autovía and autopista route that starts in Madrid and ends in Arteixo (A Coruña).
The tolled Autopista AP-6, from Villalba to Adanero, has a total length of 72.19 km. It includes one of the most important engineering works in the whole motorway, a tri-tube tunnel under the Sierra de Guadarrama.
| From | To | Length | Signal | ||
|---|---|---|---|---|---|
| 1 | 41.79 km | A-6 | |||
| 2 | 72.19 km | AP-6 | |||
| 3 | 51.29 km | A-6 | |||
| 4 | 107.65 km | A-6 | |||
| 5 | 65.57 km | A-6 | |||
| 6 | 65.05 km | A-6 | |||
| 7 | 140.26 km | A-6 | |||
| 8 | 74.33 km | A-6 |