SN1 may refer to:
- SN1 reaction, a type of organic chemical reaction
- (7990) 1981 SN1, a Main Belt minor planet
- (7058) 1990 SN1, a main-belt minor planet
- a SN postcode for Swindon, England
- Sportsnet One, a Canadian sports channel
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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