JA, Ja, jA, or ja may refer to:
Japan (Japanese: 日本 Nippon [nip̚põ̞ɴ] or Nihon [nihõ̞ɴ]; formally 日本国 Nippon-koku or Nihon-koku, meaning "State of Japan") is a sovereign island nation in East Asia.
James VI and I (19 June 1566 – 27 March 1625) was King of Scotland as James VI from 24 July 1567 and King of England and Ireland as James I from the union of the Scottish and English crowns on 24 March 1603 until his death.
Shawn Corey Carter (born December 4, 1969), known professionally as Jay Z (and formerly Jay-Z), is an American rapper and businessman.
Japanese (日本語, Nihongo, [nihõŋɡo] or [nihõŋŋo]) is an East Asian language spoken by about 125 million speakers, primarily in Japan, where it is the national language.
Jazz is a music genre that originated amongst African Americans in New Orleans, United States, in the late 19th and early 20th centuries, and developed from roots in Blues and Ragtime.
John Joseph "Jack" Nicholson (born April 22, 1937) is an American actor and filmmaker, who has performed for over 60 years.