OPL

OPL may stand for:

Computing and technology

• Open Programming Language
• Optical path length
• Optimization Programming Language, a modelling language designed for the CPLEX Optimization software
• FM Operator Type-L, a series of sound chips made by Yamaha:
  • YM3526 (OPL)
  • YM3812 (OPL2)
  • YMF262 (OPL3)
  • YMF278 (OPL4)

Libraries

• Oakville Public Library, in Oakville, Ontario
• Oshawa Public Library, in Oshawa, Ontario
• Ottawa Public Library, in Ottawa, Ontario
• One-person library
• Omaha Public Library, in Omaha, Nebraska
• Orem Public Library, in Orem, Utah

Sports

• Oceanic Pro League, a former professional League of Legends league in Oceania
• Oman Professional League, an association football league in Oman

Other

• Luxembourg Philharmonic Orchestra, abbreviated to OPL
• On Patrol: Live, an American docuseries that uses the abbreviation OPL
• Optique & Précision de Levallois (1911-1964), a former French optical company
• Open Publication License, license predating Creative Commons licenses
• Operating lease
• Organisation du Peuple en Lutte ("Struggling People's Organization"), a Haitian political party