PJ may refer to:
Arts and entertainment P.J. (film), a 1968 film starring George Peppard P.J. (comics), a character in The Family Circus comic strip P.J. (Disney), Pete Junior, a Disney cartoon character PJ (singer), singer and songwriter "PJ" (song), by BossMan Dlow featuring Lil Baby, 2024 P.J. (TV series) (Police judiciaire) a French TV series starring Bruno Wolkowitch (1997–2009)
Businesses Peach John, a Japanese lingerie retailer with "pj" logo PJ Media, originally known as Pajamas Media PJ Trailers, an American trailer manufacturer
Organisations PJ, Police Judiciaire, a higher branch of the French police services PJ, Justicialist Party, (Partido Justicialista), a major Argentine political party PJ, Polícia Judiciária, Portuguese criminal investigation police
People P. J. (given name), including a list of people with that name
Places Massie Wireless Station, Rhode Island, U.S. Petaling Jaya, a Malaysian city Port Jervis, New York, U.S. Port Jefferson, New York, a village on Long Island, New York in the United States
Other uses PJ, IATA code for Air Saint-Pierre PJ, personal jurisdiction, a court's jurisdiction over the parties to a lawsuit PJ, petajoule, a unit of energy pJ, picojoule, a unit of energy PJ, code for United States Air Force Pararescue The PJ, The Pharmaceutical Journal
See also PJS (disambiguation) JP (disambiguation)