ZNS or ZnS may refer to:
- ZNS is part of the Zambian Defence Force.
- Zinc sulfide or zinc sulphide (ZnS), a chemical compound
- Zoned Namespace, a feature of NVMe
- ZNS-TV, a national radio and TV broadcaster operated by the state-owned Broadcasting Corporation of The Bahamas
- ZNS-1, the oldest broadcast station in the Bahamas