The following highways are numbered 233:
Canada Manitoba Provincial Road 233 Newfoundland and Labrador Route 233 Prince Edward Island Route 233 Quebec Route 233
Costa Rica National Route 233
Ireland R233 regional road
Japan Japan National Route 233
Nigeria A233 highway (Nigeria)
United Kingdom road
United States Alabama State Route 233 Arkansas Highway 233 California State Route 233 Colorado State Highway 233 Georgia State Route 233 K-233 (Kansas highway) Kentucky Route 233 Maine State Route 233 Montana Secondary Highway 233 Nevada State Route 233 New Mexico State Road 233 New York State Route 233 Ohio State Route 233 Oregon Route 233 Pennsylvania Route 233 Tennessee State Route 233 Texas State Highway 233 (former) Texas State Highway Spur 233 Utah State Route 233 (former) Virginia State Route 233 Wyoming Highway 233