Kamil is a Polish, Czech, and Slovak given name, equivalent to the Italian Camillo, Spanish Camilo and French Camille, deriving from Camillus, a Roman family name, which is sometimes claimed to mean "attendant at a religious service" in Latin, but may actually be of unknown Etruscan origin. The female version is Kamila, equivalent to English Camilla.
It is also a Turkish name, with the female version of Kamile; these names were common during Ottoman Empire and not as common in Turkey today.
Kamil (كامل) is also an Arabic name and some time used as adjective, more usually transliterated as Kamel which can be translated as "perfect" or "the Perfect One". It is also used in Urdu, Persian and Sindhi meaning "complete".
In Islamic theology, al-Insān al-Kāmil (اَلإِنْسَانِ الكَامِلْ, also rendered as İnsan-ı Kâmil انسانِ كامل - in Persian and Urdu), is a term used as an honorific title to describe Muhammad. It is an Arabic phrase meaning "the person who has reached perfection."