SJ
- Freedom Air
- Jeep Cherokee (SJ)
- Jeep SJ
- SJ (rapper)
- SJ (singer)
- SJ AB
- SJ radar
- Saint John, New Brunswick
- Samuel Johnson
- Samurai Jack
- San Jose Sharks
- San Jose, California
- San Juan, Puerto Rico
- ScratchJr
- Secretary for Justice (Hong Kong)
- Seymour Johnson Air Force Base
- Shankar–Jaikishan
- Shijian
- Show Jumping
- Sitara-e-Jurat
- Sj-sound
- Social justice
- Society of Jesus
- Solicitors Journal
- South Jersey
- Sriwijaya Air
- St. John's, Newfoundland and Labrador
- Statens Järnvägar
- Strafe-jumping
- Subang Jaya
- Summary judgment
- Super Junior
- SuperJet
- Superjail!
- Suure-Jaani
- Suzuki Jimny
- Svalbard and Jan Mayen