List of highways numbered 234
- A234 highway (Nigeria)
- Borung Highway
- California State Route 234
- Georgia State Route 234
- Indiana State Road 234
- Japan National Route 234
- K-234 (Kansas highway)
- Kentucky Route 234
- Maine State Route 234
- Manitoba Provincial Road 234
- Maryland Route 234
- National Highway 234 (India)
- National Route 234 (Costa Rica)
- New Mexico State Road 234
- New York State Route 234
- Newfoundland and Labrador Route 234
- Oregon Route 234
- Pennsylvania Route 234
- Prince Edward Island Route 234
- Quebec Route 234
- Strada statale 234 Codognese
- Tennessee State Route 234
- Texas State Highway 234
- Virginia State Route 234
- Wyoming Highway 234