List of highways numbered 240
- California State Route 240
- Georgia State Route 240
- Hawaii Route 240
- Indiana State Road 240
- Interstate 240 (disambiguation)
- Japan National Route 240
- Kentucky Route 240
- Manitoba Provincial Road 240
- Massachusetts Route 240
- Minnesota State Highway 240
- Missouri Route 240
- National Route 240 (Costa Rica)
- New Mexico State Road 240
- New York State Route 240
- Oregon Route 240
- Pennsylvania Route 240
- Prince Edward Island Route 240
- Saskatchewan Highway 240
- South Dakota Highway 240
- Tennessee State Route 240
- Texas State Highway 240
- Texas State Highway Spur 240
- U.S. Route 240
- Utah State Route 240
- Virginia State Route 240
- Washington State Route 240
- Wimmera Highway
- Wyoming Highway 240