Košín is a village and municipality ( obec) in Tábor District in the South Bohemian Region of the Czech Republic.
The municipality covers an area of , and has a population of 61 (as at 3 July 2006).
Košín lies approximately north of Tábor, north of České Budějovice, and south of Prague.
Kosin or Kosins is both a given name and surname. Notable people with the name include:
- Kosin Hembut (born 1982), Thai footballer
- Phil Kosin (1950–2009), American journalist
- Yuri Kosin (born 1948), Ukrainian photographer
- Gary Kosins (born 1949), American football player
- Kathy Kosins (born 1954), American singer