| OWL | Object Warehouse For Learning 
| Others |
| OWL | Object Windows Library
| Others |
| OWL | Observation Without Limits
| Others |
| OWL | Observe Wait And Listen
| Others |
| OWL | Observe Wait Listen
| Others |
| OWL | Observe Water Levels
| Others |
| OWL | Obsessed With Learning
| Others |
| OWL | Off White Letter
| Others |
| OWL | Often Will Leak
| Others |
| OWL | Ogle Winston Link
| Others |
| OWL | Oh Wonderful Life
| Others |
| OWL | Oil and Water Light
| Others |
| OWL | Oil Warning Light
| Others |
| OWL | Old White Lady
| Others |
| OWL | Old World Labs
| Others |
| OWL | Old World Levain
| Others |
| OWL | Older Wiser Learners
| Others |
| OWL | Older Wiser Literature
| Others |
| OWL | Older Wiser Lutherans
| Others |
| OWL | Older Women's League
| Others |
| OWL | Older Womens' League
| Others |
| OWL | Omnipotent Wonderful Lord
| Others |
| OWL | On With Life
| Others |
| OWL | On-line Web stories for Learning
| Others |
| OWL | One Watt Linear
| Others |
| OWL | One Way Low
| Others |
| OWL | One Whole Life
| Others |
| OWL | One World Line
| Others |
| OWL | Ongoing Weight Loss
| Others |
| OWL | Online Web Learning
| Others |
| OWL | Online Web Learnings
| Others |
| OWL | Online Webbased Learning
| Others |
| OWL | Online With Libraries
| Others |
| OWL | Online Writing and Learning
| Others |
| OWL | Online Writing Lab
| Others |
| OWL | Online Writing Laboratory
| Others |
| OWL | Open Ware Laboratory
| Others |
| OWL | Open Windows Library
| Others |
| OWL | Opening the World to Learning
| Others |
| OWL | Operator Wireless and Line
| Others |
| OWL | Optimal Wellness for Life
| Others |
| OWL | Optimized and Witty Livery's
| Others |
| OWL | Orchestrating Wisdom And Learning
| Others |
| OWL | Order of Wild Ladies
| Others |
| OWL | Ordinary Wizarding Level
| Others |
| OWL | Ordinary Wizarding Levels
| Others |
| OWL | Orientation Week Leiden
| Others |
| OWL | Orientation Workshop Leader
| Others |
| OWL | Origin Wiracipta Lestari
| Others |
| OWL | Ornithological Worldwide Literature
| Others |
| OWL | Orphaned WildLife rehabilitation society
| Others |
| OWL | Our Web Location
| Others |
| OWL | Our Wedding List
| Others |
| OWL | Our Whole Lives
| Others |
| OWL | Our World Languages
| Others |
| OWL | Our World Learning
| Others |
| OWL | Outdoor Webelos Leader
| Others |
| OWL | Outlaw Wrestling League
| Others |
| OWL | Outlined White Lettering
| Others |
| OWL | Outlined White Letters
| Others |
| OWL | Outpost Firewall
| Others |
| OWL | Outstanding Wizard Luck
| Others |
| OWL | Outstanding Wizarding Levels
| Others |
| OWL | Overheat Warning Lamp
| Others |
| OWL | Overly Wide Lightbucket
| Others |
| OWL | Overstreet Whiteness Level
| Others |
| OWL | Overwatch League
| Others |
| OWL | Overweight Load
| Others |
| OWL | OverWhelmingly Large telescope
| Others |
| OWL | Owens With Lemke
| Others |
| OWL | Owls Working For Leadership
| Others |
| OWL | Oxford Wireless Lan
| Others |
| OWL | Web Ontology Language
| Others |