The following highways are numbered 5A:

Canada

• British Columbia Highway 5A

India

• National Highway 5A (India)

Japan

• Sasson Expressway
• Shiribeshi Expressway

United States

• U.S. Route 5A (Massachusetts) (former)
• Florida State Road 5A (Volusia County)
  • Florida State Road 5A (St. Augustine)
  • County Road 5A (Brevard County, Florida)
  • County Road 5A (Broward County, Florida)
  • County Road 5A (Indian River County, Florida)
  • County Road 5A (Martin County, Florida)
• Massachusetts Route 5A (former)
• Nevada State Route 5A (former)
• County Route 5A (Monmouth County, New Jersey)
• New York State Route 5A
  • County Route 5A (Allegany County, New York)
  • County Route 5A (Columbia County, New York)
  • County Route 5A (Nassau County, New York)
  • County Route 5A (Schoharie County, New York)
• Oklahoma State Highway 5A
• Vermont Route 5A