List of highways numbered 243

Canada

• Manitoba Provincial Road 243
• Prince Edward Island Route 243
• Quebec Route 243

  Costa Rica

• National Route 243

  Japan

• Japan National Route 243

  United States

• Alabama State Route 243
• Arkansas Highway 243
• California State Route 243
• Connecticut Route 243
• Florida State Road 243
• Georgia State Route 243
• Indiana State Road 243
• Iowa Highway 243
• K-243
• Kentucky Route 243
• Maryland Route 243
• Minnesota State Highway 243
• Montana Secondary Highway 243
• New Mexico State Road 243
• New York State Route 243
• Ohio State Route 243
• Pennsylvania Route 243
• South Carolina Highway 243
• Tennessee State Route 243
• Texas State Highway 243
• *Farm to Market Road 243
• * Ranch to Market Road 243
• Utah State Route 243
• Vermont Route 243
• Virginia State Route 243
• Washington State Route 243
• Wisconsin Highway 243