Mari El Republic
B
I
K
- Kaleyevo
- Karay
- Karlyganskoye rural settlement
- Kartukovo
- Kazanskoye
- Kel'maksola
- Khalturino, Ishtymbal'skoye rural settlement
- Khlebnikovo
- Kichiyer
- Kilemari
- Kim
- Klenovaya Gora
- Kokshamarskoye rural settlement
- Kokshamary
- Kokshaysk
- Kokshayskoye rural settlement
- Korkatovo
- Korotkovo
- Korotni
- Korta
- Kosolapovo
- Kozikovo
- Kozmodemyansk
- Krasnaya Lyunda
- Krasnogorskiy urban settlement
- Krasnogorsky
- Krasnooktyabrskiy
- Krasnoyarskoye rural settlement
- Krasny Steklovar
- Krasnyy Most
- Krasnyy Yar
- Krupino
- Kukmar'
- Kuknur
- Kul'bash
- Kulakovo
- Kum'ya
- Kumsky
- Kundysh
- Kundyshskoye rural settlement
- Kuplonga
- Kurakino
- Kuyankovo
- Kuyar
- Kuzhener
- Kuzhmara, Kuzhmarinskoye rural settlement
- Kuzhmara, Kuzhmarskoye rural settlement
- Kuzhmarskoye rural settlement
- Kuznetsovo, Kuznetsovskoye rural settlement
- Kuznetsovo, Kuznetsovskoye rural settlement