| OWLS | Older Wiser Ladies Society
| Others |
| OWLS | Older Wiser Learning Servants
| Others |
| OWLS | Older Wiser Learning Students
| Others |
| OWLS | Older Wiser Loving Seniors
| Others |
| OWLS | Older Wiser Lutheran Saints
| Others |
| OWLS | Older Wiser Lutheran Seniors
| Others |
| OWLS | On-line Wireless Learning System
| Others |
| OWLS | On-line Writing Lab Site
| Others |
| OWLS | Oracle Web Logic Server
| Others |
| OWLS | Ornithological Waterstones Landing Service
| Others |
| OWLS | Orphans Without Love or Shelter
| Others |
| OWLS | Otsego Wildlife Legacy Society
| Others |
| OWLS | Our Wishes of Love and Support
| Others |
| OWLS | Outagamie Waupaca Library System
| Others |
| OWLS | Outdoor Wildlife Learning and Survival
| Others |
| OWLS | Outdoor Wildlife Learning Site
| Others |
| OWLS | Outdoor Wisconsin Leadership School
| Others |
| OWLS | Outer Banks WildLife Shelter
| Others |