The NYPD is investigating a reported rape at a popular gay Village nightspot that occurred after the Gay Pride Parade, cops said.

A woman told police a man followed her into a bathroom at The Duplex, at Christopher Street and Seventh Avenue, at around 12:30 a.m. Monday and raped her.

No arrests have been made.

The piano bar and cabaret counts Barbra Streisand, Woody Allen and Joan Rivers among its celebrity performers.