Organizations
- Partito Liberale Svizzero (Italian for Liberal Party of Switzerland)
- Pioneer Library System, libraries operating in several counties in Oklahoma
- Poculi Ludique Societas, Medieval & Renaissance Players of Toronto
- Polska Liga Siatkówki (English: Polish Volleyball League)
- Princeton Law School, a department of Princeton University from 1847 until 1852
- Premier League Soccer, an Indian football league competition based in West Bengal
Read more about this topic: PLS