Joss may refer to:
- Joss (name), including a list of people with the name
- JOSS, a time-sharing programming language
- Joss (Chinese statue), a religious object
- Joss house (disambiguation)
- Joss JP1, an Australian-built supercar
- Joss paper, a type of burnt offering
- Joss Pass, a mountain pass in British Columbia, Canada
- Joss stick, a form of incense
- Abbreviation for the Journal of Open Source Software
- Joss., taxonomic author abbreviation of Marcel Josserand (1900–1992), a French mycologist