NMM

NMM may refer to:

• National Music Museum, a musical instrument museum in Vermillion, South Dakota, United States
• National Maritime Museum in Greenwich, England
• National Media Museum in Bradford, England
• Navi Mumbai Metro, India
• Nonhydrostatic Mesoscale Model, used by the WRF
• Prefix for Italian ships in the Marina Militare
• N-Methylmaleimide, an organic compound
• Nikhil Manipuri Mahasabha, a Hindu nationalist political party
• FAA Location identifier for Naval Air Station Meridian
• National Minority Movement, a British organisation which attempted to organise a united front with the existing trade unions
• N-Methylmorpholine, an organic base in chemistry
• Network-Integrated Multimedia Middleware, a multimedia framework
• N-methyl mesoporphyrin IX, a hemin-related porphyrin