Kaleen is an uncommon yet captivating female given name of unknown origin. It is believed to have been created as a variant spelling of the name Kaylee, which itself may be derived from the Gaelic name 'Caoilfhionn', meaning 'slender'. Kaleen has not gained widespread popularity but stands out for its uniqueness and ease of pronunciation.
The name Kaleen experienced fluctuations in popularity over the years, with a significant increase starting from the late 1960s until peaking in the mid-1980s, after which it gradually declined. The most popular years for the name were 1982 and 1983, with 21 births each. Since 2000, there have been fewer than 10 births per year on average, indicating a substantial decrease in popularity for the name Kaleen in recent times.