List of highways numbered 304

Brazil

• BR-304

  Canada

• Manitoba Provincial Road 304
• Nova Scotia Route 304
• Prince Edward Island Route 304
• Saskatchewan Highway 304

  China

• China National Highway 304

  Costa Rica

• National Route 304

  Hungary

• Main road 304

  Japan

• Japan National Route 304

  Thailand

• Highway 304

  United Kingdom

• A304 road

  United States

• Arkansas Highway 304
• * Arkansas Highway 304N
• Florida State Road 304
• Georgia State Route 304
• Louisiana Highway 304
• Maryland Route 304
• Mississippi Highway 304
• Montana Secondary Highway 304
• Nevada State Route 304
• New Mexico State Road 304
• New York State Route 304
• North Carolina Highway 304
• Ohio State Route 304
• Pennsylvania Route 304
• *

• South Carolina Highway 304
• Tennessee State Route 304
• Texas:
• * Texas State Highway 304
• * Texas State Highway Loop 304
• * Farm to Market Road 304
• Utah State Route 304
• Virginia State Route 304
• Washington State Route 304

• Puerto Rico Highway 304
• U.S. Virgin Islands Highway 304