SUF may refer to:
- Scouts unitaires de France
- Socialistisk Ungdomsfront (Socialist Youth Front, Denmark)
- Syndikalistiska Ungdomsförbundet (Swedish Anarcho-syndicalist Youth Federation)
- SUF, the IATA code for the Lamezia Terme International Airport in Italy
- Souf, a town in Jordan
- The lexical root of Sufi is variously traced to صُوف, ṣūf "wool"
- Svenskt utlandsregistrerat företag, meaning Swedish Foreign Registered Branch/Company
- Selective Unforgeability or Strong Unforgeability, security definitions for digital signatures
- Steven Universe Future, an American animated television series on Cartoon Network that serves as a epilogue to Steven Universe