Operational definition, Operational auditing, Operational semantics, Operational level of war, The Operational Art of War, Operational risk, Operational system, Operational View, Operational conversion unit, Operational Requirement, Standardized approach (operational risk), Operational Group (Poland), Journal of the Operational Research Society, Operational risk management, Operational acceptance testing, Operational amplifier, Operational Service Medal, The Operational Art of War Vol. 1: 1939–1955, Operational excellence, Operational Test and Evaluation Force, Operational historian, Director, Operational Test and Evaluation, Operational Research Society, Operational database, Operational artificial intelligence, Common operational picture, Australian Operational Service Medal, Operational Service Medal for Afghanistan, Operational Land Forces Command, No. 237 Operational Conversion Unit RAF, Geostationary Operational Environmental Satellite, Operational manoeuvre group, Operational due diligence, Operational Land Imager, Operational Command South, Operational data store, Operational bill, No. 226 Operational Conversion Unit RAF, Independent Operational Group Narew, Common Operational Datasets, Operationalization

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Operational definition, Operational auditing, Operational semantics, Operational level of war, The Operational Art of War, Operational risk, Operational system, Operational View, Operational conversion unit, Operational Requirement, Standardized approach (operational risk), Operational Group (Poland), Journal of the Operational Research Society, Operational risk management, Operational acceptance testing, Operational amplifier, Operational Service Medal, The Operational Art of War Vol. 1: 1939–1955, Operational excellence, Operational Test and Evaluation Force, Operational historian, Director, Operational Test and Evaluation, Operational Research Society, Operational database, Operational artificial intelligence, Common operational picture, Australian Operational Service Medal, Operational Service Medal for Afghanistan, Operational Land Forces Command, No. 237 Operational Conversion Unit RAF, Geostationary Operational Environmental Satellite, Operational manoeuvre group, Operational due diligence, Operational Land Imager, Operational Command South, Operational data store, Operational bill, No. 226 Operational Conversion Unit RAF, Independent Operational Group Narew, Common Operational Datasets, Operationalization, 25th Operational Weather Squadron, Operational Mentoring and Liaison Team, The Journal of Operational Risk, 9th Operational Weather Squadron, The Operational Art of War II: Modern Battles 1956–2000, Operational modal analysis, Operational Medical Orderly, No. 240 Operational Conversion Unit RAF, Operational plan, Tavria operational-strategic group, Operational technology, Commander Fleet Operational Standards and Training, 11th Operational Weather Squadron, Operational transconductance amplifier, 26th Operational Weather Squadron, Local operational picture, Operational Service Medal for Sierra Leone, 21st Operational Weather Squadron, Operational loads monitoring, Operational Command North, Operational stress injury, 15th Operational Weather Squadron, Operational-level agreement, No. 2 (Coastal) Operational Training Unit RAF, No. 236 Operational Conversion Unit RAF, Operational Silo Test Facility, No. 228 Operational Conversion Unit RAF, Naval Center for Combat and Operational Stress Control, Operational design domain, Dnipro operational-strategic group, Bayesian operational modal analysis, Strike Attack Operational Evaluation Unit, 17th Operational Weather Squadron, New Zealand Operational Service Medal, Ground based operational surveillance system, No. 2 Operational Conversion Unit RAAF, NATO Maritime Interdiction Operational Training Centre, Operational Service Medal for the Democratic Republic of Congo, No. 242 Operational Conversion Unit RAF, Operational efficiency, Operational responsiveness, Aerospace Operational Support Group RAAF, Joint Operational Support Airlift Center, Current-feedback operational amplifier, No. 231 Operational Conversion Unit RAF, Operational transformation, Marine Operational Training Group 81, No. 5 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