The meaning of the Acronym SSO is...

SSO is

• System Security Officer
• Support System for OEX
• Space Shuttle Orbiter
• Subsystem Operation (in Spacelab)
• Source Selection Official
• Safety Signification Operation

More Meanings For SSO:

• Source Selecting Official
• Struck Submerged Object
• Student State Officer
• Student Services Office
• Shared Service Organization
• System Security Officer
• School Services Officer
• School Service Officer
• System Security Officer
• Senior Support Officer
• Springfield Symphony Orchestra
• Skate Society Of Oregon
• Single Sign On
• Signal Security Office
• Special Security Office

SSO is also in:

• Firms
• General
• Military
• Music
• Ocean Science
• Positions
• Security
• Sports
• Universities