Personnel Security Investigation

Views Updated: Dec 15, 2025

Key Facts

Abbreviation

PSI

Pronunciation

/ˌpərsəˈnɛl sɪˈkjʊrəti ˌɪnˌvɛstəˈgeɪʃən/

Category

Governmental

Related Field

Military

Other meanings of PSI

Pounds per Square Inch Academic

Pounds per Square Inch (lb/in2 preferred) Gov

Partai Sosialis Indonesia Intl

Pre-Sensory Intuition Medical

Present Serviceability Index Gov

Pride Service and Integrity Misc

Partido Socialista Interior Intl

Pacific Sulfur Investigation Academic

Paul Scherrer Institute Community

Potential Security Informant Gov