OEC

OEC may refer to:

• Offshore Energy Center, sponsor of the Ocean Star Offshore Drilling Rig & Museum in Galveston, Texas, United States
• Old Earth creationism, a term for several types of creationism
• Ordre des Experts-Comptables, French association of chartered accountants
• Oregon Environmental Council, an American environmental organization
• Orion Expedition Cruises, Australian based luxury expedition cruise line
• Orissa Engineering College, a technical institution in Bhubaneswar, Orissa, India
• Osborn Engineering Company, a former British manufacturer of motorcycles
• Otis Elevator Company, an American company that manufactures vertical transportation systems
• Outdoor Emergency Care, a course for certification of first aid in non-urban situations
• Oxygen evolving complex, a water oxidizing enzyme
• .OEC, the file format for OE-Cake!

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