Soyombo alphabet by Zanabazar

The script was designed in 1686 by Zanabazar, the first spiritual leader of Tibetan Buddhism in Mongolia, who also designed the Horizontal square script.[2] The Soyombo script was created as the fourth Mongolian script, only 38 years after the invention of the Clear script. The name of the script alludes to this story. It is derived from the Sanskrit word Svayambhu "self-created".

A special character of the script, the Soyombo symbol, became a national symbol of Mongolia and has appeared on the national flag and emblem of Mongolia since 1911, as well as money, stamps, etc.