List of highways numbered 3A

• 20px Alberta Highway 3A
• 20px British Columbia Highway 3A
• 20px Manitoba Highway 3A
• 20px Newfoundland and Labrador Route 3A (Team Gushue Highway)
• 20px Nova Scotia Trunk 3A (former)

• 20px Massachusetts Route 3A
• 20px Nevada State Route 3A (former)
• 20px New Hampshire Route 3A
• 20px New York State Route 3A
• 20px Oklahoma State Highway 3A
• 20px Texas Park Road 3A

;Territories:

• 20px Guam Highway 3A

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{{List of highways numbered index}}

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{{Road index|003A|sd=none}}