Tribeca, originally written as TriBeCa, is a neighborhood in Lower Manhattan, New York City. Its name is a portmanteau from "Triangle Below Canal Street". The "triangle", which is actually more of a trapezoidal shape, is bounded by Canal Street, West Street, Broadway, and either Chambers or Vesey Streets. The neighborhood is home to the Tribeca Film Festival.

Tribeca is one of a number of neighborhoods in New York City whose name is either a portmanteau or an acronym, including SoHo, NoHo, Nolita, NoMad, Dumbo and BoCoCa, the latter of which is actually a collection of neighborhoods.