JK
- J. K. College
- J. K. Dobbins
- J. K. Ihalainen
- J. K. Organisation
- J. K. Rowling
- J. K. Scott
- J. K. Simmons
- J.K. (singer)
- JK (TV series)
- JK (rapper)
- JK Building
- JK Lasers
- JK Memorial
- JK business
- JK flip-flop
- JK-47
- Jammu and Kashmir (disambiguation)
- Jammu and Kashmir (union territory)
- Jan Kjellström International Festival of Orienteering
- Jason King (presenter)
- Jay Kay
- Jaykae
- Jeep Wrangler
- Jelena Karleuša
- Jesper Kyd
- Jiddu Krishnamurti
- John McKay Jr.
- Jordan Katembula
- Joseph Kevin Bracken
- Juan Karlos Labajo
- Jungkook
- Juscelino Kubitschek
- Just Kidding (disambiguation)
- Järnkaminerna
- Kidd antigen system
- Spanair