PSIA or psia may refer to:
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Physical Security Interoperability Alliance
The Physical Security Interoperability Alliance (PSIA) is a global consortium of more than 65 physical security manufacturers and systems integrators focused on promoting interoperability of IP-enabled security devices and systems across the phys ...
, industrial standardization initiative promoting interoperability of IP-enabled security devices
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Pounds per square inch
The pound per square inch (abbreviation: psi) or, more accurately, pound-force per square inch (symbol: lbf/in2), is a unit of measurement of pressure or of stress based on avoirdupois units and used primarily in the United States. It is the pre ...
absolute (including atmospheric pressure)
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Professional Ski Instructors of America, an organization offering training and certification for U.S. Ski Instructors
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Philippine Software Industry Association
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Paris School of International Affairs
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Private Schools Interscholastic Association
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Palm Springs International Airport
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Public Security Intelligence Agency
The is the Security agency, domestic intelligence agency of Japan. It is administered by the Ministry of Justice (Japan), Ministry of Justice and is tasked with internal security and espionage against threats to Japanese national security based o ...
, the national intelligence agency of Japan
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