List of highways numbered 666
The following highways are numbered 666:
Belgium[edit]
- The pilgrimage centre of Banneux in Belgium is located on the N666 road.
Canada[edit]
- Alberta Highway 666
- Ontario Highway 666 (former)
Ireland[edit]
Italy[edit]
- Strada regionale 666 di Sora (formerly strada statale 666 di Sora)
Philippines[edit]
Sweden[edit]
- Länsväg 666, in Uppland, eastbound from Alunda.
United Kingdom[edit]
United States[edit]
Preceded by 665 | Lists of highways 666 | Succeeded by 667 |