List of highways numbered 145
- Alabama State Route 145
- Arkansas Highway 145
- California State Route 145
- Colorado State Highway 145
- Connecticut Route 145
- County Road 145 (Hamilton County, Florida)
- County Route 145 (Broome County, New York)
- County Route 145 (California)
- County Route 145 (Fulton County, New York)
- County Route 145 (Herkimer County, New York)
- County Route 145 (Rensselaer County, New York)
- County Route 145 (Schenectady County, New York)
- Farm to Market Road 145
- Florida State Road 145
- Georgia State Route 145
- Hawaii Route 145
- Illinois Route 145
- Indiana State Road 145
- Iowa Highway 145
- Japan National Route 145
- Kentucky Route 145
- Louisiana Highway 145
- M-145 (Michigan highway)
- Maine State Route 145
- Malaysia Federal Route 145
- Maryland Route 145
- Massachusetts Route 145
- Mississippi Highway 145
- Missouri Route 145
- National Route 145 (Costa Rica)
- New Brunswick Route 145
- New Hampshire Route 145
- New Mexico State Road 145
- New York State Route 145
- North Carolina Highway 145
- Ohio State Route 145
- Oklahoma State Highway 145
- Pennsylvania Route 145
- Prince Edward Island Route 145
- Puerto Rico Highway 145
- South Carolina Highway 145
- Tennessee State Route 145
- Texas State Highway 145
- Texas State Highway Loop 145
- Texas State Highway Spur 145
- Utah State Route 145
- Utah State Route 145 (1933-1969)
- Virginia State Route 145
- Winnipeg Route 145
- Wisconsin Highway 145