The New York City Taxi and Limousine Commission is an agency of the New York City government that licenses and regulates the medallion taxis and for-hire vehicle industries, including app-based companies such as Uber and Lyft. The TLC's regulatory landscape includes medallion (yellow) taxicabs, green or Boro taxicabs, black cars, community-based livery cars, commuter vans, paratransit vehicles (ambulettes), and some luxury limousines.

A taxi medallion, also known as a CPNC, is a transferable permit in the United States allowing a taxicab to operate. Several major cities in the US use these in their taxi licensing systems, including New York City, Boston, Chicago, Philadelphia, and San Francisco.