The Union Jack, or Union Flag, is the flag of the United Kingdom.

Union Jack may also refer to:

• Union Jack of Norway and Sweden, a navy jack and consular flag (1844–1905)
• Jack of the United States, a navy jack

• Union Jack (comics), a fictional character in the Marvel Comics Universe
  • Union Jack (Joseph Chapman), the third incarnation of the character
• Union Jack Jackson, a character in the Warlord comic book

• Union Jack (band), an English trance group
• Union Jack (ballet), a ballet by George Balanchine
• Union Jacks, album by The Babys
• Union JACK, a radio station in the United Kingdom.

• Union Jack (American newspaper), a nationally-circulated monthly U.S. newspaper aimed at British expatriates, published from 1982 to July 2016.
• Union Jack (magazine), a UK story paper of the late 19th and early 20th century.

• Union Jack dress
• Union Jack Club, a London club for members of the British Armed Services
• Union Jack, a type of bet offered by UK bookmakers
• Union Jack, the name of a London bus company of the 1900s, originally called London Road Car Company
• Saluting the Union Jack
  • Formally means Naval salute
  • Informally means drinking (e.g., as described by Roger Sterling Mad Men, episode 3.6)
• Delias mysis, a butterfly of Australia, New Guinea and neighbouring islands

This disambiguation page lists articles associated with the title Union Jack.
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