ZPP may refer to:
- ZPP (complexity), zero-error probabilistic polynomial time
- Zinc protoporphyrin
- zirconium-potassium perchlorate, a pyrotechnic composition
- Związek Patriotów Polskich, a Polish communist political party
zpp may refer to:
- ISO 639:zpp, ISO 639-3 code for El Alto Zapotec