The following highways are numbered 309:
Canada Manitoba Provincial Road 309 Nova Scotia Route 309 Prince Edward Island Route 309 Quebec Route 309 Saskatchewan Highway 309
China China National Highway 309
Costa Rica National Route 309
India National Highway 309 (India)
Japan Japan National Route 309
United Kingdom A309 road, Twickenham to Hook, London
United States U.S. Route 309 (former) Arkansas Highway 309 Connecticut Route 309 Florida State Road 309 (former) Georgia State Route 309 Kentucky Route 309 Louisiana Highway 309 Maryland Route 309 Minnesota State Highway 309 Mississippi Highway 309 New Mexico State Road 309 New York: New York State Route 309 County Route 309 (Erie County, New York) County Route 309 (Westchester County, New York) Ohio State Route 309 Ohio State Route 309 (former) Pennsylvania Route 309 Pennsylvania Route 309 Business Puerto Rico Highway 309 South Carolina Highway 309 (former) Tennessee State Route 309 Texas: Texas State Highway 309 Texas State Highway Spur 309 Farm to Market Road 309 Utah State Route 309 Virginia State Route 309