The Court Square–23rd Street station is a New York City Subway station complex on the IND Crosstown Line, the IRT Flushing Line and the IND Queens Boulevard Line. The complex is located in the vicinity of One Court Square in Hunters Point and Long Island City, Queens, and is served by the 7, E, and G trains at all times; the M train on weekdays; and the <7> express train during weekdays in the peak direction.

The IND Crosstown Line or Brooklyn–Queens Crosstown Line is a rapid transit line of the B Division of the New York City Subway in Brooklyn and Queens, New York City, United States. It provides crosstown service between western Brooklyn and northwestern Queens and is the only subway line that does not carry trains to and from Manhattan.