Regions of South Sudan
- Mongwa
- Mongo
- Khor Mongmongiru
- Mongdor
- Mongalla
- Monga
- Mondi
- Monar
- Monar
- Momoriya
- Molongori
- Moli
- Molau
- Molau
- Mokwi
- Mokwi
- Jabal Moku
- Mokkei
- Mokkei
- Mokina
- Jabal Moiyungo
- Moiyil
- Moing Jang
- Moingbi
- Moimoi
- Moimoi
- Khor Moich
- Moibar Swamp
- Mohom
- Mogu
- Mogogh
- Mogiri
- Jabal Mogira
- Mogina
- Moga
- Moga
- Mofigi
- Moeru
- Moeba
- Modole
- Modo
- Modi
- Khor Mobukpa
- Jabal Mobakali
- Moarkeyor
- Khor Moa
- Khawr Moa
- Miyom
- Miyan
- Mit Ping
- Mito
- Mitika
- Mitambara
- Masri
- Misharr
- Mirsala
- Wadi Miri
- Miri
- Jabal Miri
- Mirda
- Khor Milau
- Minyepi
- Minyal
- Minkamman
- Miniogbolo
- Ming
- Munbar
- Minamba
- Mimnum
- Mimi
- Mimakimi
- Milkieh
- Jabal Migi
- Midoru
- Khor Midi
- Miau
- Mialek
- Miakol
- Miadol
- Khawr Mgagya
- Meyun
- Jabal Meyepi
- Khor Meyano
- Methiang
- Mesika
- Jabal Mesig al Fīl
- Meshra Ashol
- Khor Meriok
- Meriok
- Merileli
- Jebel Merijen
- Meridedi
- Meribu
- Merial
- River Meri
- Khor Mergem
- Merakwin
- Mer
- Khawr Menzi
- Khor Meze
- Mentiel
- Mennaidi
- Meninger
- Mendopolo
- Jabel Mendolin
- Melwel Latuk
- Melwal
- Melia
- Melau
- Mekr
- Mekajik
- Mejuk
- Mejali
- Meiyino
- Meiyino
- Meir
- Meir
- Meino
- Megiri
- Megiri
- Megak
- Megak
- Medingbor
- Meding
- Meding
- Mediket
- Medi
- Mede
- Mecharr
- River Mbungu
- Mboyo
- Khor Mborozoro
- Mboro
- Mboro
- Mboro
- Khor Mbongo
- Khor Mbomu
- Khor Mbomu
- Khor M’Boloko
- M’Bittima
- Mbimbe
- Mbili
- River Mbika
- Mbia
- Mbelembo
- Mbatai
- Khor Mbarizunga
- Khor Mbaraba
- Khor Mbara
- Mbana
- Khor Mbamu
- Mbakaia
- Khor Mbagi
- Khor Mbagi
- Jabal Mazoro
- Mayom Chuci
- Mayom
- Mayom
- Mayil
- Mayen
- Mayen
- Mayen
- Maiyen
- Mayen
- Mayeir
- Mayan
- Mayalla
- Mawyek
- Mawu
- Dahal Mauri
- Mawogi
- Mawel
- Mawakeir
- Maundi
- Mattok
- Jabal Mattara
- Matong
- Matjang
- Matinga
- Mathiang
- Materr
- Matern
- Matakorn
- Mata Hills
- Khawr Masumbu
- Khor Massikisa
- Mashra‘ ar Raqq
- Mashi
- Mashet
- Mashar
- Mashar
- Mashar
- Masha
- Maryal Bai
- Maryal
- Maryal
- Marial
- Maruwa Hills
- Jabal Marungo
- Maruka