Pat or PAT may refer to:
Science and technology
Photographic Activity Test, an ISO standard test
Portable appliance testing, an electrical safety test
Powder-actuated tool, a type of nail gunComputing
PAT (model checker) (Process Analysis Toolkit)
Page attribute table, in x86 and x86-64 memory caching
Performance acceleration technology, an Intel memory performance technology
Port address translation, a type of network address translation
Program Association Table, in an MPEG transport stream
Personal access token, a password alternativeMedicine and biology
Paddington alcohol test, for alcohol-related problems
Paroxysmal atrial tachycardia, an episode of arrhythmia that begins and ends abruptly
Peripheral Arterial Tone, a noninvasive measure
Phosphinothricin acetyltransferase, an enzyme
Photoacoustic tomography, by an ultrasound scan
Picture arrangement test
Process analytical...