List of highways numbered 346

Canada

• Manitoba Provincial Road 346
• Newfoundland and Labrador Route 346
• Quebec Route 346

  Japan

• Japan National Route 346

  United States

• Georgia State Route 346
• Iowa Highway 346
• Kentucky Route 346
• Louisiana Highway 346
• Maryland Route 346
• New York:
• * New York State Route 346
• * County Route 346
• * County Route 346
• Pennsylvania Route 346
• Puerto Rico Highway 346
• South Carolina Highway 346
• Tennessee State Route 346
• Texas:
• * Texas State Highway 346
• * Farm to Market Road 346
• Vermont Route 346
• Virginia State Route 346