Kajetan is of Polish origin, derived from the Latin 'Caietanus', which means 'from Caieta'. This name was borne by Saint Kajetan, founder of the Theatines religious order in the 16th century. It is composed of two elements: 'cai' meaning 'rejoice' and '-tan' meaning 'tall'. Kajetan has been traditionally used in Poland but has gained popularity internationally in recent years due to its unique sound and rich history. It is often spelled with a 'K', but can also be found with a 'C'. The name's popularity may be attributed to its association with the saint, as well as its appealing phonetics.
Kajetan had 6 babies born with that name in 2010 and another 5 in 2015, making a total of 11 little Kajetans over those years.