The present volume is devoted to Turkic, one of the world’s major language families. The family comprises a high number of distinct languages and varieties that display remarkable similarities and notable differences. The languages are generally considered to be genealogically related, that is, going back to a common ancestor language reconstructable as ‘Proto-Turkic’ by means of comparative methods. They may also be seen as part of a vast ‘Transeurasian’ typological continuum consisting of Turkic, Mongolic, Tungusic, Koreanic, and Japonic. The possible genealogical relationship between the members of this grouping is highly disputed. In particular, it is unclear whether the members represent a higher line of descent, a genealogical phylum derived from some kind of ancestor traditionally called ‘Altaic’. Various proposals concerning possible deeper genealogical links have been put forward. The Turkic languages also share interesting areal properties with neighbors in the same or adjacent regions.