| Acronym | Definition |
|---|
| JJ | Janet Jackson |
| JJ | Jesse James |
| JJ | Jack Johnson (musician) |
| JJ | Joe Jonas (of Jonas Brothers) |
| JJ | Jenna Jameson (porn star) |
| JJ | Jimmie Johnson (NASCAR driver) |
| JJ | Juvenile Justice |
| JJ | Judge Judy (show) |
| JJ | Joe Johnson (basketball player) |
| JJ | Jacksonville Jaguars (NFL football) |
| JJ | Janis Joplin (singer) |
| JJ | James Jr (Good Times TV show character) |
| JJ | Jumbo Jet |
| JJ | John Jay |
| JJ | Jamba Juice |
| JJ | Jaromir Jagr |
| JJ | Just Joking |
| JJ | Jumping Jacks |
| JJ | Jazz Jackrabbit (game) |
| JJ | Josephson Junction |
| JJ | Juicy Juice (Libby beverage) |
| JJ | Jens Johansson (singer) |
| JJ | Just Joshing |
| JJ | J Jayalalitha (India) |
| JJ | Jason Jaffray (hockey player) |
| JJ | Jeff Jerret (pro wrestler) |
| JJ | Juggling Joker (game) |
| JJ | Jejunjejunostomy |
| JJ | Jeeva Jyothi (Chennai, India) |