the city was known as Gades and its Roman colony as Augusta Urbs Iulia Gaditana ('The August City of Julia of Cádiz'). In Arabic, the Latin name became Qadis , from which the Spanish Cádiz derives. The Spanish demonym for people and things from Cádiz is gaditano.

The same root also gives the modern Italian Càdice, Catalan Cadis, Portuguese Cádis, and French Cadix, the last also appearing