The following highways are numbered 19A:

• British Columbia Highway 19A
• Prince Edward Island Route 19A

• Taiwan Provincial Highway 19A

• Karnataka State Highway 19A

• Florida State Road A19A (former)
  • County Road 19A (Lake County, Florida)
• Maryland Route 19A
  • Maryland Route 19A (1951–1962) (former)
• County Road 19A (Washington County, Minnesota)
• Nebraska Spur 19A
• New York State Route 19A
  • County Route 19A (Allegany County, New York)
  • County Route 19A (Genesee County, New York)
  • County Route 19A (Schoharie County, New York)
  • County Route 19A (Suffolk County, New York)
• South Dakota Highway 19A