| Acronym | Definition |
|---|
| NISL➣National Institute for School Leadership |
| NISL➣Northern Illinois Soccer League |
| NISL➣Northern Ireland Sign Language (UK) |
| NISL➣North Island Soccer League (New Zealand) |
| NISL➣Network and Internetworking Services Ltd. (Cumbria, England, UK) |
| NISL➣Norwegian Information Security Laboratory (Gjovik University College; Gjovik, Norway) |