OPL
OPL stands as an abbreviation for:
- Òganizasyon Pèp Kap Lité (Organization du Peuple en Lutte) the social democratic party of Haiti
- One Person Library , a small library managed by one person
- Open Programming Language , a programming language for the Symbian operating system
- Open Publication License , a free license for documents
- Orchester Philharmonique du Luxembourg , see Philharmonic Orchestra of Luxembourg
- Outer plexiform layer , a layer of the retina, see Retina # Outer plexiform layer (OPL)
- a family of chips from Yamaha, see Yamaha YM3812
- Open items list , also known as a to-do list
