List of highways numbered 1A
The following highways are numbered 1A:
Canada
- Alberta Highway 1A
- British Columbia Highway 1A
- Manitoba Highway 1A
- Prince Edward Island Route 1A
Germany
- Bundesstraße 1a, a German road
Greece
- EO1a road, remnants of the realigned Athens–Thessaloniki–Evzonoi road that were not upgraded to the A1 motorway
India
Laos
- Route 1A
New Zealand
- New Zealand State Highway 1A
Switerland
- A1a motorway
United States
- U.S. Route 1A
- Delaware Route 1A
- Massachusetts Route 1A
- New Hampshire Route 1A
- New York State Route 1A
- Rhode Island Route 1A
- Secondary State Highway 1A
Vietnam
- National Route 1, also known as National Route 1, a road connecting the northernmost and southernmost areas of the country