Other Uses
- National Open School or National Institute of Open Schooling, the Board of Education for open schools in India
- National Orthodox School, a private school in Amman, Jordan
- Nederlandse Omroep Stichting, a Dutch public broadcaster
- New Orleans Saints, an American football team
- Nine O'Clock Service, an alternative worship service in the 1980s in Sheffield, England
- Nitrous Oxide Systems, a manufacturer of nitrous systems for high-performance automobiles
- NOS (drink), a beverage named after Nitrous Oxide Systems
- Nos, Book of the Resurrection, a book by Miguel Serrano (original title: Nos: Libro de la Resurrección)
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