Cajsa is a variant of the name Kajsa, which is a diminutive form of Katarina. The name Katarina itself is derived from the Greek name Aikaterine, which has uncertain origins but is often associated with the Greek word 'katharos,' meaning 'pure.' Cajsa, as a name, carries the same connotations of purity and simplicity. It is particularly notable in Swedish culture due to its association with Cajsa Warg, a prominent historical figure in Swedish culinary history.