The following highways are numbered 305:
Canada Manitoba Provincial Road 305 New Brunswick Route 305 Nova Scotia Route 305 Prince Edward Island Route 305 Saskatchewan Highway 305
China China National Highway 305
India National Highway 305
Japan Japan National Route 305
Philippines N305 highway (Philippines)
United States Interstates Interstate 305 (multiple unsigned routes) Interstate 305 (cancelled proposal) Arkansas Highway 305 Connecticut Route 305 Florida State Road 305 (former) Georgia State Route 305 Hawaii Route 305 Iowa Highway 305 (former) Kentucky Route 305 Maryland Route 305 Mississippi Highway 305 Montana Secondary Highway 305 Nevada State Route 305 New Mexico State Road 305 New York State Route 305 New York State Route 305 (former) North Carolina Highway 305 Ohio State Route 305 Pennsylvania Route 305 Tennessee State Route 305 Texas: Texas State Highway 305 Texas State Highway Loop 305 Farm to Market Road 305 Utah State Route 305 (former) Virginia State Route 305 Washington State Route 305 West Virginia Route 305
Other areas: Puerto Rico Highway 305 U.S. Virgin Islands Highway 305