International
Australia
Canada
China
Greece
India
Iran
Israel
New Zealand
Poland
National road 99 (former; 1986–2000)
United States
Interstate 99
Interstate 99 (Delaware-North Carolina) (proposed)
U.S. Route 99 (former)
U.S. Route 99T (former)
Alabama State Route 99
Arizona State Route 99
Arkansas Highway 99 (former)
California State Route 99
Connecticut Route 99
Florida State Road 99 (former)
Georgia State Route 99
Hawaii Route 99
Idaho State Highway 99
Illinois Route 99
Iowa Highway 99 (former)
K-99 (Kansas highway)
Kentucky Route 99
Louisiana Highway 99
Maine State Route 99
Maryland Route 99- Massachusetts Route 99
M-99 (Michigan highway)
Minnesota State Highway 99
Missouri Route 99
- Missouri Route 99 (1929) (former)
Nebraska Highway 99
County Route 99 (Bergen County, New Jersey)
New Mexico State Road 99 (former)
New York State Route 99 (former)
County Route 99 (Dutchess County, New York)
County Route 99 (Herkimer County, New York)- County Route 99 (Madison County, New York)
- County Route 99 (Montgomery County, New York)
- County Route 99 (Onondaga County, New York)
- County Route 99 (Orleans County, New York)
County Route 99 (Saratoga County, New York)- County Route 99 (Schenectady County, New York)
- County Route 99 (Steuben County, New York)
County Route 99 (Suffolk County, New York)- County Route 99 (Westchester County, New York)
North Carolina Highway 99
Ohio State Route 99
Oklahoma State Highway 99
Oregon Route 99
Pennsylvania Route 99
Rhode Island Route 99
South Carolina Highway 99
Tennessee State Route 99
Texas State Highway 99
Farm to Market Road 99
Utah State Route 99
Virginia State Route 99
Washington State Route 99
Washington State Route 99T (former)
West Virginia Route 99
Wisconsin Highway 99 (former)
See also
- List of highways numbered 99E
- List of highways numbered 99W
- A99
- B99
- E 99 road (United Arab Emirates)
| Preceded by 98 |
Lists of highways 99 |
Succeeded by 100 |