LDF
- IRS Aero
- Leaders For Democracy Fellows Program
- Left Democratic Front
- Left Democratic Front (Maharashtra)
- Legado Del Fantasma
- Lesotho Defence Force
- Liberian Development Foundation
- Liechtenstein disclosure facility
- Liga Dominicana de Fútbol
- Lithuanian Labour Federation
- Local Defence Force
- London Design Festival
- London dispersion force
- Loss development factor
- Luc de Fougerolles
- LuraTech
- Microsoft SQL Server
- NAACP Legal Defense and Educational Fund