PSR
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The three letter acronym PSR may refer to:
- Pulsar, a kind of star
- Abruzzo International Airport (IATA airport code)
- Portuguese Sign Language (ISO 639-3 language code)
- Pacific School of Religion
- Posthumous sperm retrieval
- Potential support ratio
- Price/sales ratio
- Predictive State Representation
- Principle of sufficient reason
- Socialist Revolutionary Party
- Physicians for Social Responsibility
- Philmont Scout Ranch A working ranch in New Mexico, operated by the Boy Scouts of America
- Parental Supervision Recommended, a ratings guidelines sometimes used by Marvel Comics