The Circle in the Square Theatre is a Broadway theater at 235 West 50th Street, within the basement of Paramount Plaza, in the Midtown Manhattan neighborhood of New York City. The current Broadway theater, completed in 1972, is the successor of an off-Broadway theater of the same name, co-founded around 1950 by a group that included Theodore Mann and José Quintero. The Broadway venue was designed by Allen Sayles; it originally contained 650 seats and uses a thrust stage that extends into the audience on three sides. The theater had 776 seats as of 2024.

Paramount Plaza, also 1633 Broadway and formerly the Uris Building, is a 48-story skyscraper in the Midtown Manhattan neighborhood of New York City. Designed by Emery Roth and Sons, the building was developed by the Uris brothers and was renamed for its owner, the Paramount Group, by 1980. Paramount Plaza occupies a site bounded by Broadway to the east, 51st Street to the north, and 50th Street to the south.