Estonian Bureau for Lesser-Used Languages (EstBLUL) is a non-governmental organisation which is promoting autochnous lesser used languages in Estonia. The promoted minority languages are Yiddish, German, Swedish, Russian, Romani language, Tatar and Finnish, regional languages are Setu language and Võru language. The members of EstBLUL are the organisations of respective language communities as legal persons.

EstBLUL is founded 2004. The Estonian name of EstBLUL is Eesti Regionaal- ja Vähemuskeelte Liit (ERVL). EstBLUL is the member of the European Bureau for Lesser-Used Languages (EBLUL) acting as its Estonian organization (MSC).