Double J or Double Jay may refer to:

• Double Jay, the former name of Australian radio station Triple J
  • Double J (radio station), the Triple J-run rebranding of radio station Dig Music
• Double-J stent, a ureteric stent used in urology
• Double-J (manga), a comedy manga by Eiji Nonaka
• Double Jay (horse), an American Thoroughbred racehorse
• Double J, ring name of professional wrestler Jeff Jarrett

• JJ (disambiguation)

This disambiguation page lists articles associated with the title Double J.
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