List of highways numbered 666

Belgium

• The pilgrimage centre of Banneux in Belgium is located on the N666 road.

Canada

• Alberta Highway 666
• Ontario Highway 666

Ireland

• R666

Italy

• Strada regionale 666 di Sora

Netherlands

• Provinciale weg 666 NL Wiki Page

Philippines

• N666 highway (Philippines)

Sweden

• Swedish [county road 666|Länsväg 666], in Uppland, eastbound from Alunda. Z 666 Wiki SV

United Kingdom

• A666 road

United States

• U.S. Route 666
• Florida [State Road 666]
• Maryland Route 666
• Ohio [State Route 666]
• Pennsylvania Route 666
• Puerto Rico Highway 666
• Farm to [Market Road 666]