List of highways numbered 308

Canada

• Manitoba Provincial Road 308
• Nova Scotia Route 308
• Prince Edward Island Route 308
• Saskatchewan Highway 308

  China

• China National Highway 308

  Costa Rica

• National Route 308

  Japan

• Japan National Route 308

  United States

• Arkansas Highway 308
• * Arkansas Highway 308 Business
• * Arkansas Highway 308 Spur
• Florida:
• * Florida State Road 308
• * County Road 308
• * County Road 308B
• Georgia State Route 308
• Kentucky Route 308
• Louisiana Highway 308
• *

• Maryland Route 308
• Minnesota State Highway 308
• Montana Secondary Highway 308
• New York:
• * New York State Route 308
• * County Route 308
• * County Route 308
• * County Route 308
• North Carolina Highway 308
• Ohio State Route 308
• Pennsylvania Route 308
• South Carolina Highway 308
• Tennessee State Route 308
• Texas:
• * Texas State Highway 308
• * Texas State Highway Loop 308
• * Farm to Market Road 308
• Utah State Route 308
• Virginia State Route 308
• Washington State Route 308

• Puerto Rico Highway 308
• U.S. Virgin Islands Highway 308