JJ or jj may refer to:
Jelena Janković, professional tennis player
Jesu Juva, used by Johann Sebastian Bach at the b
Read moreJJ or jj may refer to:
Jelena Janković, professional tennis player
Jesu Juva, used by Johann Sebastian Bach at the beginning of his compositions
Jj coupling, a form of angular momentum coupling
JJ Lehto, Finnish motorsport racing driver
JJ (magazine), a fashion magazine
J. J. Thomson, a scientist .
JJ (video game), a video game developed and published by Square Co., Ltd.
JJ, a brassiere measurement in the UK
JJ, TAM Airlines's IATA code
Robert Jay (judge), noted in court reports as "Jay J."
Justo Justo or JJ, Filipino columnist & presenter
J/Z (New York City Subway service) or formerly JJ
