Mari El Republic
B
C
I
K
- Kaleyevo
- Karay
- 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
- Korta
- Kosolapovo
- Kozikovo
- Kozmodemyansk
- Krasnaya Lyunda
- Krasnogorskiy urban settlement
- Krasnogorsky
- Krasnooktyabrskiy
- Krasnoyarskoye rural settlement
- Krasnoznamenskiy
- Krasny Steklovar
- Krasnyy Most
- Krasnyy Yar
- Krupino
- Kuanpamash
- Kukmar'
- Kuknur
- Kul'bash
- Kulakovo
- Kum'ya
- Kundysh
- Kundyshskoye rural settlement
- Kupay
- Kurakino
- Kuyankovo
- Kuyar
- Kuzhener
- Kuzhmara, Kuzhmarinskoye rural settlement
- Kuzhmara, Kuzhmarskoye rural settlement
- Kuzhmarskoye rural settlement
- Kuznetsovo, Kuznetsovskoye rural settlement
- Kuznetsovo, Kuznetsovskoye rural settlement
- Kuznetsy
M
N
P
S
- Saltak'yal
- Sapun'zha
- Sardayal
- Savino
- Sebeusad
- Semenovka, Kokshayskoye rural settlement
- Semenovka, Yoshkar-Ola Urban Okrug
- Sen'kino
- Senda
- Senur
- Shelanger
- Shelangerskoye rural settlement
- Sherengub
- Shimshurga
- Shin'sha
- Shirokundysh
- Shlan'
- Shordur
- Shorsola
- Shorun'zha
- Shoy-Shudumar'
- Shoybulak
- Shoybulakskoye rural settlement
- Shuarsola
- Shulka
- Shura
- Shuyka
- Sidel'nikovo
- Sidorovo, Sidorovskoye rural settlement
- Silikatny
- Solnechny
- Sotnur
- Sovetsky
- Sovetsky urban settlement
- Sredneye Azyakovo
- Sredny Kadam
- Srednyaya Tursha
- Staroye Komino
- Staroye Kreshcheno
- Staryy Tor'yal
- Stepankino
- Sukhodol
- Surok
- Suslonger
- Suslonger urban settlement
- Svetloye Ozero
- Svetlyy
- Sysoyevo