For other companies named Public Service Corporation, see Public Service Corporation (disambiguation).

The Public Service Railway, owned by the Public Service Corporation of New Jersey, operated most of the streetcar lines in New Jersey by the early 20th century. Public Service lines stretched from northeast New Jersey to Trenton, and then south to Camden and its suburbs. Major parts of the system were:

• The Newark Public Service Terminal, a two-level terminal in downtown Newark.
• The Hoboken Inclined Cable Railway, an elevated railway from Hoboken Terminal up the New Jersey Palisades into Jersey City and south to near Journal Square.
• The Newark-Trenton Fast Line, an interurban line mostly on private right-of-way from Newark to Trenton.

The only streetcar route still in operation is the #7 line, now the Newark City Subway. The other two light rail systems in New Jersey are built along freight railroad rights-of-way.

In later years, Public Service bustituted most routes; many of these lines are still run by New Jersey Transit and even use the same number.