| Acronym | Definition |
|---|
| Sou | South/Southern |
| Sou | Southern (railroad) |
| Sou | State of the Union |
| Sou | Sense of Urgency |
| Sou | Southern Oregon University |
| Sou | Statens Offentliga Utredningar (Swedish: National Public Inquiries) |
| Sou | Statement of Understanding |
| Sou | Shadows of Undrentide (computer game) |
| Sou | Stredniho Odborneho Uciliste (Czech: Secondary Vocational School) |
| Sou | Special Operations Unit (law enforcement) |
| Sou | Sound Data |
| Sou | Southampton, England, United Kingdom - Eastleigh (Airport Code) |
| Sou | Sole-Occupancy Unit |
| Sou | Service Orientation Universitaire (French: Service Orientation University; University of Liège; Belgium) |
| Sou | Southampton Canoe Club (UK) |