The Balto-Slavic languages form a branch of the Indo-European family of languages, traditionally comprising the Baltic and Slavic languages.Baltic and Slavic languages share several linguistic traits not found in any other Indo-European branch, which points to a period of common development. Although the notion of a Balto-Slavic unity has been contested (partly due to …

The following table contains the top 100 languages by estimated number of native speakers in the 2007 edition of the Swedish encyclopedia Nationalencyklopedin.As census methods in different countries vary to a considerable extent, and given that some countries do not record language in their censuses, any list of languages by native speakers, or total speakers, is …