Ancient South Arabian (ASA; also known as Old South Arabian, Epigraphic South Arabian, Ṣayhadic, or Yemenite) is a group of four closely related extinct languages (Sabaean/Sabaic, Qatabanic, Hadramitic, Minaic) spoken in the far southern portion of the Arabian Peninsula. The earliest preserved records belonging to the group are dated to the beginning of the 1st millennium BCE. They were written in the Ancient South Arabian script.
There were a number of other Old South Arabian languages (e.g. Awsānian), of which very little evidence has survived, however. A set of possible surviving Sayhadic languages is attested in the Razihi language, Rijal Alma language, and Faifi language spoken in far north-west of Yemen and far south-west of Saudi Arabia, though these varieties of speech have both Arabic and Sayhadic features, and it is difficult to classify them as either Arabic dialects with a Sayhadic substratum, or Sayhadic languages that have been restructured under pressure of Arabic.