In the entire world, Kajetán (Kajetán , Каэтан , Каєтан ) is a very rare boy's first name. The first name Kajetán is characteristic of Eastern Europe, particularly Czechia, where it is a rare masculine name, and Russia, where it is an extremely rare boy's name.
Kajetán is also a name for the fictitious and mythical characters: Kajetan Chrumps , the character from Mystery of Marabut code, The Secret of the Marabou Cipher.