kallas

Kallas is a surname of Estonian origin. It is most commonly found in Estonia and among people of Estonian descent. In Estonian naming practice, surnames often derive from geographic features, place names, or other natural associations, though the precise etymology of Kallas is not universally agreed.

The name is widely associated with public figures in Estonia, including Kaja Kallas (born 1977), who has served as Prime Minister of Estonia, and Siim Kallas (born 1948), a prominent Estonian politician who has held several national and European roles.

Outside Estonia, Kallas may appear among individuals of Estonian heritage. In Swedish, the lowercase word kallas is the present passive form of the verb kalla, meaning "is called" or "are called," and is commonly found in everyday language.