SLEF
| Acronym | Definition |
|---|---|
| SLEF | Sri Lanka Ecotourism Foundation (est. 1998; Sri Lanka) |
| SLEF | Student Life Endowment Fund (University of Waterloo; Canada) |
| SLEF | Skye & Lochalsh Environment Forum (UK) |
| SLEF | State Legal Expense Fund (Missouri) |
| SLEF | St. Lucia Employers' Federation (est. 1961) |
| SLEF | Student Library Enhancement Fund (University of Toronto, Canada) |
| SLEF | San Louis Educational Foundation |