The Constitution of the Republic of Bashkortostan (Russian: Конституция Республики Башкортостан, Bashkir: Башҡортостан Республикаһы Конституцияһы) is the supreme law of Bashkortostan, Russia.

Its first three articles entrench the doctrine of the separation of powers, whereby the government is divided into three branches: the legislative, consisting of the State Assembly of Bashkortostan; the executive, consisting of the Head; and the judicial, consisting of the Supreme Court and other courts.

The Constitution of Bashkortostan significantly changed dramatically.

Recent amendments to the Constitution made in 2014: President of the Republic will be called the "head".

Also articles of the Constitution, concerning the Bashkir language not met: Ufa federal authorities do not perform signs and names in the language of the indigenous people.