- ZZS stands for Alliance of the Greens and Farmers Union (Latvia)
- ZZS stands for Zdravniska Zbornica Slovenije (Slovenian: Medical Chamber of Slovenia)
- ZZS stands for Zwolle-Zuid Schaakt (Dutch: Zwolle-Zuid Chess; chess club; Netherlands)
- ZZS stands for Zadružna Zveza Slovenije (Cooperative Union of Slovenia)
ZZS