NIFL
| Acronym | Definition |
|---|---|
| NIFL | National Institute for Literacy |
| NIFL | Northern Ireland Football League (est. 2013) |
| NIFL | National Indoor Football League |
| NIFL | Northern Indiana Fuel and Light (Merrillville, IN) |
| NIFL | National Independent Football League (est. 2008) |
| NIFL | Northwest Indiana Federation of Labor (Hammond, IN) |
| NIFL | Northwest Indiana Football League |