| SUA | Saint Ursula Academy 
| Others |
| SUA | SCCP User Adaptation
| Others |
| SUA | Sccp User Adaptation Layer
| Others |
| SUA | Seacoast Utility Authority
| Others |
| SUA | Seattle Urban Academy
| Others |
| SUA | Secunia Update Agent
| Others |
| SUA | Shape Up America
| Others |
| SUA | Shelter Utility Allowance
| Others |
| SUA | Silver Users Association
| Others |
| SUA | Single Umbilical Artery
| Others |
| SUA | Single User Account
| Others |
| SUA | Slovak University of Agriculture
| Others |
| SUA | Societas Uralo Altaica
| Others |
| SUA | Software Upgrade Assistant
| Others |
| SUA | Soka University of America
| Others |
| SUA | Sokoine University of Agriculture
| Others |
| SUA | Sokoine University of Agriculture (Morogoro, Tanzania)
| Others |
| SUA | Southern Umpires Association
| Others |
| SUA | Special Use Airspace
| Others |
| SUA | Specialist Underwriting Agencies
| Others |
| SUA | St Ursula Academy
| Others |
| SUA | State Universities of America
| Others |
| SUA | Stored Upstream Address
| Others |
| SUA | Stuart, Florida USA
| Others |
| SUA | Student Union Activities
| Others |
| SUA | Student Union Assembly
| Others |
| SUA | Student Unions and Activities
| Others |
| SUA | Subsystem for Unix Based Applications
| Others |
| SUA | Sudden Unintended Acceleration
| Others |
| SUA | Sundance America
| Others |
| SUA | Suppression of Unlawful Acts
| Others |
| SUA | Suppression of Upstream ATG
| Others |
| SUA | Surfboard Attachment
| Others |
| SUA | Syracuse University Ambulance
| Others |
| SUA | System Update Agent
| Others |