NFS may refer to:
- Network File System, a distributed file system protocol developed by Sun Microsystems
- NFS (news service) (Nýja fréttastofan), a former Icelandic television news service
- National Financial Switch, a bank network in India
- National Fire Service, the Second World War UK fire service
- Need for Speed, a series of driving video games
- Council of Nordic Trade Unions (Nordens Fackliga Samorganisation)
- General number field sieve, an algorithm for factoring integers
- National Forest System, a division of the United States Forest Service