Kosmas, known as Cosmas of Prague or Cosmas Decanus, was a priest, writer and historian born in a noble family in Bohemia (1045–1125). His Chronica Boemorum – Chronicle of the Czechs was the oldest Czech chronicle on the history of the Czechs.
KOSMAS is a magazine focusing on Czech, Slovak, and Central European Studies. Published by the Czechoslovak Society of Arts & Sciences. Since 1982.