Pat or PAT may refer to:

• Pat (Alice's Adventures in Wonderland), a gardener
• Pat (Saturday Night Live), an androgynous character
• Postman Pat, a British children's TV character
• Pat, from the Czech series Pat & Mat
• Pat the Dog, a character from the TV show of the same name
• Pat, or Lucky's Dad, a Bluey character
• Pat, daughter-in-law of Jake the Dog in Adventure Time

• "Pat" (album), by Pat Boone, 1957
• PAT (TV channel) [es], in Bolivia

• Pakistan Awami Tehreek, a political party
• Pickleball Association Tasmania
• Polish Telegraphic Agency, the official news agency of Poland 1918–1991
• Port Authority of Thailand
• Professional Association of Teachers, later Voice, a former British trade union
• PAT (Ukrainian: Публічне акціонерне товариство), a type of Ukrainian legal entity, equivalent to plc

• Patrick (given name), including a list of people with the name, sometimes known as Pat
• Patricia, a feminine given name, including a list of people with the name, sometimes known as Pat
• Narcisse Théophile Patouillard (1854–1926, standard botanical abbreviation: Pat.), French pharmacist and mycologist
• Jenny Pat (1981–2014), Hong Kong-born, Chinese-Canadian international art dealer, visual artist, and television personality

• Pat, Hungary
• Pat, Iran
• Pat, Jerusalem
• Pat River, Quebec, Canada
• Port Arthur, Texas, U.S., nickname PAT
• Patince (Hungarian: Pat), a village in Slovakia

• PAT (model checker), the 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 alternative

• 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, in psychological testing
• Process analytical technology, in pharmaceutical manufacturing
• Pseudotropine acyltransferase, an enzyme
• Putrescine aminotransferase, an enzyme

• Photographic Activity Test, an ISO standard test
• Portable appliance testing, an electrical safety test
• Powder-actuated tool, a type of nail gun

• Patricroft railway station (station code: PAT), Manchester, England
• Patterson railway station (station code: PAT), Melbourne, Australia
• Port Authority Transit, later Pittsburgh Regional Transit, Pennsylvania, US
• Jay Prakash Narayan Airport (IATA airport code: PAT), Patna, India

• Point after touchdown, in American football
• Pat silk, a variety of silk
• Prodotti agroalimentari tradizionali, an official approval for traditional Italian regional food products
• Pat hand, in the card game of poker

• Patricia (disambiguation)
• Patrick (disambiguation)
• PATS (disambiguation)
• Patt (disambiguation)
• Expatriate, or ex-pat, a person residing in a country other than their native country
• I = PAT, the impact of human activity on the environment
• All pages with titles beginning with PAT
• All pages with titles beginning with PaT
• All pages with titles beginning with Pat
• All pages with titles containing pat