18th Street
18th Street may refer to:
- In Los Angeles
- 18th Street gang, an Hispanic street gang
- In Manhattan, New York City
- 18th Street (IRT Broadway – Seventh Avenue Line); a subway station serving the 1 and 2 trains
- 18th Street (IRT Lexington Avenue Line), an abandoned subway station; formerly serving the 4, 6, and <6> trains
- 18th Street (IRT Third Avenue Line), (demolished)
- 18th Street (IRT Sixth Avenue Line), (demolished)
- In Washington, D.C.