K
- (Madhubani) Kachhua
- (Madhubani) Koiriapatti
- (Madhubani) Kapchhujja
- (Supaul) Kopaha
- (Supaul) Kamrail
- (Supaul) Khorman
- (Supaul) Kusmaul
- (Supaul) Kherpura
- (Madhubani) Karhara
- (Supaul) Khushāli
- (Supaul) Koriadhat
- (Supaul) Koni
- (Supaul) Kathwār
- (Saharsa) Kedlipatti
- (Supaul) Kamālpur
- (Madhepura) Kanhuān Goriāri
- (Madhepura) Kamargaon
- (Madhepura) Kataiya
- (Madhepura) Keton
- (Madhepura) Kalwa
- (Madhepura) Khaptolia
- (Supaul) Kusāha
- (Supaul) Kasāha
- (Supaul) Karmania
- (Supaul) Kumiāhi
- (Supaul) Kopria
- (Supaul) Karharwa
- (Supaul) Koriāpatti
- (Supaul) Kusāha
- (Supaul) Karanpatti