List of highways numbered 30
- A30 (disambiguation)
- A30 road
- AH30
- Alabama State Route 30
- Albany Highway
- Alberta Highway 30
- Arizona State Route 30
- Arkansas Highway 30 (1926–1958)
- British Columbia Highway 30
- Cabot Trail
- California State Route 30
- Colorado State Highway 30
- Connecticut Route 30
- County Road 30 (Chisago County, Minnesota)
- County Road 30 (Dakota County, Minnesota)
- County Road 30 (Hennepin County, Minnesota)
- County Road 30 (Ramsey County, Minnesota)
- County Route 30 (Bergen County, New Jersey)
- County Route 30 (Cattaraugus County, New York)
- County Route 30 (Chenango County, New York)
- County Route 30 (Delaware County, New York)
- County Route 30 (Dutchess County, New York)
- County Route 30 (Erie County, New York)
- County Route 30 (Essex County, New York)
- County Route 30 (Genesee County, New York)
- County Route 30 (Monmouth County, New Jersey)
- County Route 30 (Montgomery County, New York)
- County Route 30 (Ocean County, New Jersey)
- County Route 30 (Otsego County, New York)
- County Route 30 (Putnam County, New York)
- County Route 30 (Rockland County, New York)
- County Route 30 (Schenectady County, New York)
- County Route 30 (Schoharie County, New York)
- County Route 30 (Suffolk County, New York)
- County Route 30 (Ulster County, New York)
- County Route 30 (Washington County, New York)
- County Route 30 (Westchester County, New York)
- County Route 30 (Yates County, New York)
- County Route J30 (California)
- County Route S30 (California)
- Dangjin–Yeongdeok Expressway
- Delaware Route 30
- E 30 road (United Arab Emirates)
- European route E30
- Farm to Market Road 30
- Florida State Road 30
- Florida State Road 30E
- G30 Lianyungang–Khorgas Expressway
- Georgia State Route 30
- Gukjido 30
- Hawaii Route 30
- Highway
- I/30 Highway (Czech Republic)
- Illinois Route 30
- Interstate 30
- Japan National Route 30
- K-30 (Kansas highway)
- Kentucky Route 30
- List of highways numbered 30A
- Louisiana Highway 30
- Louisiana State Route 30-E
- M-30 (Michigan highway)
- Manitoba Highway 30
- Maryland Route 30
- Maryland Route 30BC
- Maryland Route 30BZ
- Maryland Route 30C
- Maryland Route 30D
- Massachusetts Route 30
- Minnesota State Highway 30
- Mississippi Highway 30
- Missouri Route 30
- National Road 30 (Vietnam)
- National Route 30 (South Korea)
- Nebraska Highway 30
- Nebraska Spur 30B
- Nebraska Spur 30C
- Nebraska Spur 30D
- Nebraska Spur 30H
- Nevada State Route 30
- New England Route 30
- New Jersey Route 30
- New Mexico State Road 30
- New York State Route 30
- New Zealand State Highway 30
- Newfoundland and Labrador Route 30
- North Carolina Highway 30
- North Dakota Highway 30
- Nova Scotia Trunk 30
- Ohio State Route 30 (1923-1927)
- Oklahoma State Highway 30
- Ontario Highway 30
- Otoyol 30
- Puerto Rico Highway 30
- Quebec Autoroute 30
- Saskatchewan Highway 30
- Seto-Chūō Expressway
- South Carolina Highway 30
- South Dakota Highway 30
- Tennessee State Route 30
- Texas Park Road 30
- Texas State Highway 30
- Texas State Highway Spur 30
- U.S. Route 30
- U.S. Route 30N (disambiguation)
- U.S. Route 30S (disambiguation)
- U.S. Virgin Islands Highway 30
- Utah State Route 30
- Vermont Route 30
- Virginia State Route 30
- Washington State Route 30
- Wisconsin Highway 30
- Wyoming Highway 30
