Cognomen ธีระกาญจน์ (Thirakan 
, ธีระกาญจน์ , Thiragan) , around the world, is a rare last name. The last name ธีระกาญจน์ is habitual in Thailand, where it is a rare surname, and India, where it is an extremely rare surname. Likewise, ธีระกาญจน์ is the forename as well as the last name.