Jas
- August
- Industrigruppen JAS
- JAS (band)
- JAS Motorsport
- Jace
- James (name)
- Japan Air System
- Japanese Agricultural Standard
- Jas Arora
- Jas Binag
- Jas Elsner
- Jas Gawronski
- Jas H. Duke
- Jas Mann
- Jas, Loire
- Java Analysis Studio
- Jayce
- Jenkins activity survey
- Jericho Appreciation Society
- Jinnah Antarctic Station
- Journal of Applied Statistics
- Journal of the Atmospheric Sciences
- Judge–advisor system
- July
- Jás
- New Caledonian Javanese language
- Saab JAS 39 Gripen
- September
- Syrian Arab Republic
- The Journal of Asian Studies