| Acronym | Definition |
|---|
| NIL | Notice of Intent to Levy (law) |
| NIL | Next in Line |
| NIL | Naczelna Izba Lekarska (Polish: National Physicians Council) |
| NIL | Nanoparticle Information Library (NIOSH) |
| NIL | National Imagery Library |
| NIL | Nano Imprint Lithography |
| NIL | Network Innovation Laboratories |
| NIL | Norton Icon Library |
| NIL | not in List |
| NIL | Nano-Imprint Lithography |
| NIL | Near-Isogenic Line |
| NIL | Not in List (Pascal programming language) |
| NIL | National Institute for Literacy |
| NIL | Netzwerk für Improvisation Leipzig (German: Network for Improvisation Leipzig) |
| NIL | National Information Library |
| NIL | Nothing in Line |
| NIL | National Imagery Library (NIMA) |
| NIL | Network Innovation Laboratories (NTT) |
| NIL | Nuclear Induced Lightning |
| NIL | Network Intelligent Link |