Galatian is an extinct Celtic language once spoken in Galatia in Asia Minor (modern Turkey) from the 3rd century BC up to the 4th century AD.
Of the language only a few glosses and brief comments in classical writers and scattered names on inscriptions survive. Altogether they add up to about 120 words, mostly personal names ending in 'riks (cf. Gaulish -rix/-reix, Old Irish ri, Gothic language -reiks, Latin rex) "king", some ending in -marus, dative -mari (cf. Gaulish -maros, Old Irish mor, Welsh mawr) "great", and tribal names like Ambitouti (Old Irish imm' "around", Old Irish tuath "tribe"), and a lexical item drunaimeton "place of assembly" (cf. Old Irish drui "druid", Old Irish neimed "holy place").
Galatian is a Continental Celtic language contemporary and closely related to the Gaulish language.