SM1

SM1 can refer to:

• SM-1, a nuclear reactor
• SM1, a postcode district within the SM postcode area, in Sutton, Greater London
• Signalman First Class, a former rating in the U.S. Navy
• A surface-to-air missile, RIM-66 Standard (SM-1MR) or RIM-67 Standard (SM-1ER)
• VR Class Sm1, a type of train operated by the VR Group
• Spider-Man, the first film in the Spider-Man film series
• Scary Movie, the first film in the Scary Movie series
• Superman, the first Superman film
• SM1, Secondary Math 1
• SM1, an entry index for individual medley events in disability swimming, see S1 (classification)