Keto

Keto is:

Keto ( mythology), a sea monster in Greek mythology, the daughter of Gaia and of the Pontos
Keto ( Nereid ), one of the Nereids in Greek mythology
Keto ( first name ), a male first name
Keto group, the chemical name for which the double bond between an oxygen and a carbon atom
Ceto ( Lombardy ), a town in the province of Brescia, in Lombardy
Ketene, a nomadic tribe that lives in the Siberian tundra