SNF may refer to:
- Saturday Night Fever
- Saturday Night Football
- Skilled Nursing Facility
- Skolem normal form
- Smith normal form
- Somali National Front
- Soviet Northern Front
- Spent nuclear fuel, or spent fuel
- Strong Nuclear Force
- Sunday Night Football (disambiguation)
- Solids Not Fats
- The National League of Sweden, a rightist pro-fascist organization represented in the Riksdag between 1934 and 1936
- SNF Floerger, the largest polyacrylamide manufacturer in the world