The meaning of the Acronym SIO is...

SIO is

• Senior Investigating Officer

More Meanings For SIO:

• Silicon Oxide
• Skidaway Institute of Oceanography
• Scripps Institution of Oceanography
• Students Islamic Organisation of India
• Students Islamic Organization of India
• Surety Information Office
• Surety Information Office
• Serial Input/Output
• Scalable Input/ Output Initiative
• Standard Installation Organization
• Systems Integration Office
• Serial Input/Output
• Senior Investigating Officer
• Societas Internationalis Odontologica
• Standard I O

SIO is also in:

• Accounting
• Chemistry
• General
• Military
• NASA
• Ocean Science
• Police
• Stock Exchange
• Unfiled
• Universities