Variant spelling of Carlos, the Spanish form of Charles, from Germanic 'karl' meaning 'free man'.
Carloss is a variant spelling of Carlos, the Spanish form of Charles, and ultimately belongs to the wide Germanic karl family meaning free man. That root has had an exceptionally long life across Europe, partly because it is simple, durable, and socially resonant.
Carlos itself has royal and traditional associations, and Carloss keeps that background intact even as the spelling shifts slightly. The doubled ending gives Carloss a more individualized, contemporary look, but the name still feels anchored in a recognizable classical structure. It sounds confident and masculine, with a touch of stylistic variation that makes it stand out on the page. Carloss is one of those names that manages to feel both familiar and uncommon, which is often why spelling variants persist.