• Jackie Robinson
• Japan Railways Group or its member companies
• Hokkaido Railway Company or JR Hokkaido
• East Japan Railway Company or JR East
• Central Japan Railway Company or JR Central
• West Japan Railway Company or JR West
• Shikoku Railway Company or JR Shikoku
• Kyushu Railway Company or JR Kyushu
• Japan Freight Railway Company or JR Freight
• Aero California, International Air Transport Association code
• The novel J R, written by William Gaddis
• John Ross "J.R." Ewing, Jr., a television character from Dallas
• Who shot J.R.?, a famous cliffhanger episode of Dallas
• Japan Remote Control, radio control equipment manufacturer
• Jim Rome, a controversial radio host
• Jim Ross, Professional wrestling commentator
• Junius Richard Jayewardene, First Executive President of Sri Lanka
• Johnny Cash, singer
• Johnny Rebel (singer), Southern country singer
• Johnny Rebel, slang term for soldiers of the Confederated States of America
• John Radcliffe Hospital, Oxford
• Jeremy Roenick, professional ice hockey player
• J. R. Rotem, hip-hop and pop music producer.
• J. R. Writer, an American hip hop musician.
• Jordan Rudess, the keyboardist of Dream Theater
• J.R., CMR singer and half of production duo So Hot Productions.
• J.R. Redmond, a former NFL player for the New England Patriots.
• J.R. Richard, a former baseball player for the Houston Astros.
• J.R, hip-hop and pop singer
• Jackie Robinson, athlete
• Jupiter Rising a musical band
• John Redcorn a character from King of the Hill

Jr. is the abbreviation for Junior.