SJ

SJ may refer to:

* Freedom Air (IATA code: SJ), a low cost New Zealand-based airline
* San Jose, a city in central California, United States
* St. John, the capital city of New Brunswick, Canada
* St. John's, the capital city in Newfoundland and Labrador, Canada
* Scarlett Johansson, an American actress
* SJ AB (Swedish Railways), a public transport limited company owned by the Swedish government formed from the old "Statens Järnvägar"
* Shonen Jump A Japanese Manga comic book, the biggest in the world
* Statens Järnvägar (English: Swedish State Railways), a former Swedish government agency that disbanded in 2001
* Society of Jesus (Latin: "Societas Iesu"), a Catholic religious order. Jesuits will sometimes put the letters "S.J." after their names to indicate membership
* St. John's Jesuit High School and Academy, a college-prep high school and Academy (junior high) in Toledo, Ohio
* Strafe-jumping, a trickjumping technique
* Subang Jaya, a residential hub in Klang Valley, Malaysia
* SuperJet, a personal water craft produced by Yamaha Motors
* Super Junior, a South Korean boy band under the SM Entertainment label
* Suzuki SJ 410 or 413, a series of four-wheel drive vehicles made by Suzuki
* Svalbard and Jan Mayen (ISO 3166-1 country code: SJ), two northern territories of Norway
* Steve Jobs, CEO and co-founder of Apple Inc
* Sutcliffe Jügend, a long-running British Power Electronics musical group
* Suure-Jaani, Estonia
* Summary Judgment, a legal motion