List of highways numbered 3A
The following roads are numbered 3A:
Canada
- Alberta Highway 3A
- British Columbia Highway 3A
- Manitoba Highway 3A
- Newfoundland and [Labrador Route 3A]
- Nova Scotia [Trunk 3A]
United States
- Massachusetts Route 3A
- Nevada [State Route 3A]
- New [Hampshire Route 3A]
- New York State Route 3A
- Oklahoma [State Highway 3A]
- Texas [Park Road 3A]