The following highways are numbered 377:

Brazil

• BR-377

Canada

• Saskatchewan Highway 377

Japan

• Japan National Route 377

United States

• U.S. Route 377
• Arizona State Route 377
• Arkansas Highway 377
• Georgia State Route 377
• Hawaii Route 377
• Maryland Route 377 (unsigned)
• Nevada State Route 377
• New York State Route 377
• Ohio State Route 377
• Puerto Rico Highway 377
• South Dakota Highway 377
• Tennessee State Route 377
• Texas:
  • Texas State Highway Loop 377 (former)
  • Farm to Market Road 377
• Virginia State Route 377
• Wyoming Highway 377