List of highways numbered 18

Route 18, or Highway 18, may refer to:

This list is incomplete; you can help by adding missing items. (August 2008)

International

AH18 Asian Highway 18
E18 European route E18
E018 European route E018

Argentina

RN 18

Australia

Waterfall Way

Canada

Alberta Highway 18
British Columbia Highway 18
Manitoba Highway 18
Ontario Highway 18 (former)
Prince Edward Island Route 18
Saskatchewan Highway 18

China

G18 Expressway

Costa Rica

National Route 18

Czech Republic

I/18 Highway; Czech: Silnice I/18

India

National Highway 18 (India)

Iran

Road 18

Ireland

M18 motorway (Ireland)
N18 road (Ireland)

Italy

Autostrada A18
State road 18

Japan

Japan National Route 18
Jōshin-etsu Expressway

Korea, South

National Route 18

New Zealand

New Zealand State Highway 18

Paraguay

National Route 18

Poland

Motorway A18
National road 18

Russia

M18 motorway (Russia) running from Saint Petersburg to Murmansk

South Africa

N18 road (South Africa)

Ukraine

Highway M18 (Ukraine)

United Kingdom

British A18 (Doncaster-Ludborough)
British M18 (Thurcroft-Rawcliffe)

United States

U.S. Route 18
New England Route 18 (former)
Alabama State Route 18
Arkansas Highway 18
California State Route 18
- County route A18 (California)
- County Route E18 (California)
- County Route G18 (California)
- County Route J18 (California)
- County Route S18 (California)
Colorado State Highway 18 (pre-1968) (former)
Delaware Route 18
Florida State Road 18
- County Road 18 (Bradford County, Florida)
- County Road 18 (Columbia County, Florida)
- County Road 18 (Union County, Florida)
Georgia State Route 18
Hawaii Route 18 (former)
Illinois Route 18
Indiana State Road 18
K-18 (Kansas highway)
Kentucky Route 18
Louisiana Highway 18
Maine State Route 18 (former)
Maryland Route 18
Massachusetts Route 18
M-18 (Michigan highway)
Minnesota State Highway 18
- County Road 18 (Anoka County, Minnesota)
- County Road 18 (Scott County, Minnesota)
- County Road 18 (Washington County, Minnesota)
Mississippi Highway 18
Missouri Route 18
Nebraska Highway 18
Nevada State Route 18 (former)
New Hampshire Route 18
New Jersey Route 18
- New Jersey Route 18N (former)
- County Route 18 (Monmouth County, New Jersey)
New Mexico State Road 18
New York State Route 18
- County Route 18 (Allegany County, New York)
- County Route 18 (Chautauqua County, New York)
- County Route 18 (Columbia County, New York)
- County Route 18 (Dutchess County, New York)
- County Route 18 (Erie County, New York)
- County Route 18 (Essex County, New York)
- County Route 18 (Herkimer County, New York)
- County Route 18 (Onondaga County, New York)
- County Route 18 (Ontario County, New York)
- County Route 18 (Orange County, New York)
- County Route 18 (Orleans County, New York)
- County Route 18 (Otsego County, New York)
- County Route 18 (Rensselaer County, New York)
- County Route 18 (Schoharie County, New York)
- County Route 18 (Schuyler County, New York)
- County Route 18 (Steuben County, New York)
- County Route 18 (Suffolk County, New York)
- County Route 18 (Tioga County, New York)
- County Route 18 (Washington County, New York)
- County Route 18 (Westchester County, New York)
- County Route 18 (Yates County, New York)
North Carolina Highway 18
North Dakota Highway 18
Ohio State Route 18
Oklahoma State Highway 18
- Oklahoma State Highway 18B
Oregon Route 18
Pennsylvania Route 18
South Carolina Highway 18
South Dakota Highway 18 (former)
Tennessee State Route 18
Texas State Highway 18
- Farm to Market Road 18
- Ranch to Market Road 18 (former)
Utah State Route 18
Vermont Route 18
Virginia State Route 18
Washington State Route 18
- Primary State Highway 18 (Washington) (former)
West Virginia Route 18
Wisconsin Highway 18 (former)