Indigenous languages:
* Finno-Ugric languages:
* Finnish: Spoken in the Republic of Karelia.
* Estonian: Spoken in the Ingria region.
* Udmurt: Spoken in the Udmurt Republic.
* Komi: Spoken in the Komi Republic.
* Mari: Spoken in the Mari El Republic.
* Mordvin: Spoken in the Republic of Mordovia.
* Sami: Spoken in the Kola Peninsula.
* Turkic languages:
* Tatar: Spoken in Tatarstan.
* Bashkir: Spoken in Bashkortostan.
* Chuvash: Spoken in the Chuvash Republic.
* Caucasian languages:
* Avar: Spoken in Dagestan.
* Chechen: Spoken in Chechnya.
* Ingush: Spoken in Ingushetia.
Other languages:
* Ukrainian: Spoken in border regions with Ukraine.
* Belarusian: Spoken in border regions with Belarus.
* Polish: Spoken in border regions with Poland.
* German: Spoken in some communities in the Volga region.
* Romani: Spoken by the Romani people.
It's important to note that the number of speakers of these languages varies greatly. Russian is by far the most spoken language, while many of the indigenous languages are considered endangered.