Ural-Altaic, Uralo-Altaic or Uraltaic is a linguistic convergence zone and former language-family proposal uniting the Uralic and the Altaic (in the narrow sense) languages. It is generally now agreed that even the Altaic languages do not share a common descent: the similarities among Turkic, Mongolic and Tungusic are better explained by diffusion and borrowing. Just as Altaic, internal structure of the Uralic family also has been debated since the family was first proposed. Doubts about the validity of most or all of the proposed higher-order Uralic branchings (grouping the nine undisputed families) are becoming more common. The term continues to be used for the central Eurasian typological, grammatical and lexical convergence zone.

Indeed, "Ural-Altaic" may be preferable to "Altaic" in this sense. For example, J. Janhunen states that "speaking of 'Altaic' instead of 'Ural-Altaic' is a misconception, for there are no areal or typological features that are specific to 'Altaic' without Uralic."Originally suggested in the 18th century, the genealogical and racial hypotheses remained debated into the mid-20th century, often with disagreements exacerbated by pan-nationalist agendas.

It had many proponents in Britain. Since the 1960s, the proposed language family has been widely rejected. A relationship between the Altaic, Indo-European and Uralic families was revived in the context of the Nostratic hypothesis, which was popular for a time, with for example Allan Bomhard treating Uralic, Altaic and Indo-European as coordinate branches. However, Nostratic too is now rejected.