The following highways are numbered 344:

Australia

- Heathcote-Nagambie Road

Canada

• Manitoba Provincial Road 344
• Newfoundland and Labrador Route 344
• Nova Scotia Route 344
• Quebec Route 344
• Route 344 (Prince Edward Island)

India

• National Highway 344 (India)

Japan

• Japan National Route 344

United States

• County Road 344 (Gilchrist County, Florida)
• Arkansas Highway 344
  • Arkansas Highway 344 (1973–1978)
• Georgia State Route 344 (former)
• Kentucky Route 344
• Maryland Route 344
• New York State Route 344
• North Carolina Highway 344
• Ohio State Route 344
• Oklahoma State Highway 344
• South Carolina Highway 344
• Tennessee State Route 344
• Texas:
  • Texas State Highway 344 (former)
  • Texas State Highway Loop 344
  • Farm to Market Road 344
• Virginia State Route 344

Territories

• Puerto Rico Highway 344