New York City Subway map

Many transit maps for the New York City Subway have been designed since the subway's inception in 1904. Because the subway was originally built by three separate companies, an official map for all subway lines was not created until 1940, when the three companies were consolidated under a single operator. Since then, the official map has undergone several complete revisions, with intervening periods of comparative stability.

Since April 2025, the MTA's official diagram has been inspired by a design by Massimo Vignelli. The MTA previously used a Vignelli–inspired map from 1972 to 1979, when that map was replaced by a design from Michael Hertz Associates, commissioned by John Tauranac and the MTA Subway Map Committee. There are also special maps for weekend service changes, and the MTA has previously produced maps for events such as the Mass Transit Super Bowl. There are several privately produced schematics that are available either online or in published form. Other subway map spinoffs exist as well, such as New York City Subway track schematics and maps of proposed expansions of the system.