The Gao-Indralan language family is one of the largest and geographically most widespread language families of Terra. It consists of four language groups: Cental, Northern, Southern, and Western. The Gao-Indralan languages occasionally go by the term "Gao-Showan languages", since they are spoken by the Gao-Showan peoples. The speakers of the Proto-Gao-Indralan language, the hypothetical Proto-Gao-Showans, are usually associated with the 1st millennium BCE cultures of North Dovani. Their expansion towards the South of the continent is believed to have occured around the 1st century CE. Most of these languages have been strongly influenced by Classical Kunikata, the official language of the Empire of Gao-Soto, and the oldest attested Gao-Indralan language.