Where is the headquarters of OPEC? 👤 By The Quiz Wire ✅ Fact Checked 📊 Difficulty Medium 📅 Last Updated 01 Dec 2025 A. Geneva B. Dubai C. Vienna D. Riyadh Check Answer 💡 Explanation: OPEC is headquartered in Vienna, Austria. 📚 Topics: International Organizations Politics and Government 🎯 Exams: CSS GEN NTS PMS
