The abbreviation NMS may refer to:

• Network Monitoring System
• Nagel Middle School, a public middle school located in Hamilton County, Ohio
• National Merit Scholarship
• National Military Strategy
• National Movement Simeon II Party in Bulgaria
• National Museums of Scotland
• Natural Medicines Society
• Network management system
• Neuroleptic malignant syndrome
• New Media Strategies
• NMS is a hip-hop group on the Big Dada label. Members include Orko Elohiem and Bigg Jus.
• Not My Style: Meaning that you don't care for something. Derived from Rikki Piaser circa June 2005.
• North Miami Senior High School
• Nintendo Magazine System, a monthly publication on all things Nintendo. There was an Australian, and a UK edition.