Organizations
- Polish Telegraphic Agency, the official news agency of Poland between 1918 and 1991
- Port Authority Transit, the former name of the Port Authority of Allegheny County, Pittsburgh
- Port Authority of Thailand
- Professional Association of Teachers, the former name of the trade union Voice
- Pets As Therapy (PAT) in the UK provides visiting dogs and cats to establishments where pets are otherwise not available
Read more about this topic: PAT