Regions of United Kingdom
- Glen Mark
- Mark
- Mark
- Loch Mariveg
- Mariansleigh
- Marholm
- Marhamchurch
- Marham
- Margate Roads
- Margate Hook
- Margate
- Margaretting
- Margaret Roding
- Tripcock Point
- Margam
- Marfleet
- Mare Tail
- Maresfield
- Mare of Lunna
- Mareham on the Hill
- Mareham le Fen
- Marefield
- Loch Maree
- Mar Dyke
- Marden Rocks
- Marden
- Mardale
- Marcus
- Marcross
- Marchwood
- Marchwiel
- Marchington Woodlands
- Marchington
- Marchamley
- Marcham
- March
- Marbury Hall
- Marbury
- Marble Lodge
- Marble Arch
- Marazion
- Loch Maragan
- Mappowder
- Mappleton
- Maplin Sands
- Mapleton
- Mapledurham
- Maovally
- Maol Dubh Point
- Sgeir nam Maol
- Maoile Lunndaidh
- Manuden
- Manton
- Manton
- Manton
- Manthorpe
- Manthorpe
- Manston
- Manston
- Mansfield Woodhouse
- Mansfield
- Mansewood
- Mansel Gamage
- Manse Bay
- Manor Water
- Manorowen
- Manordeifi
- Manorbier
- Manor
- Manningtree
- Manningford Bruce
- Manningford Bohune
- Manningford Abbots
- Mannal
- Mannamead
- Àrd Manish
- Manish
- River Manifold
- Mangotsfield
- Mangersta
- Mangaster Voe
- Mangaster
- Manfield
- Manea
- Manchester Ship Canal
- Manchester
- Mancetter
- Manby
- Manaton
- Manafon
- Manadon
- The Manacles
- Manacle Point
- Manaccan
- Head of Man
- Mam Sodhail
- Mamore Forest
- Forest of Mamlorn
- Mamhilad
- Mamble
- Water of Malzie
- Malvern Wells
- Malvern Link
- Malvern Hills
- Malton
- Maltby le Marsh
- Maltby
- Malpas
- Malmesbury
- Mallwyd
- Mallow Bank
- Borough of Tonbridge and Malling
- River Mallie
- Glen Mallie
- Malldraeth Marsh
- Malldraeth Bay
- Mallart River
- Mallaig Harbour
- Mallaig
- Malinslee
- Malham Tarn
- Malham
- Maldon
- Maldie Burn
- Malden
- Malcolm Rock
- Malborough
- Makerstoun House
- Makeness Kipps
- Maize Beck
- Mâisgeir
- Maisemore
- Carn Mairg
- Main Water of Luce
- Mainstone
- Mainsriddle
- Mains of Dalvey
- Mainland
- Mainland
- River Main
- Maidwell
- Maidstone
- Maids Moreton
- Maidford
- The Maidens
- Maidens
- Maiden Pap
- Maiden Newton
- Maidenhead
- Maiden Castle
- Maiden Bradley
- Maida Vale Underground Station
- Maida Vale
- Maichwater
- Mahee Island
- Loch Mahaick
- Magus Muir
- Maguires Bridge
- Magor
- Magilligan Point
- Maghull
- Maghery
- Magheraveely
- Magherasaul
- Magheramorne House
- Magheramorne
- Magheramenagh Castle
- Magheralin
- Magheralane
- Magheragall
- Magherafelt
- Magherafelt District
- Magheracreggan
- Maghera
- Maghera
- Maghan House
- Island Magee
- Maesycwmmer
- Maes-y-crugiau
- Maesteg
- Maesmynis
- Maesbury
- Mae Sand
- Maerdy
- Maer
- Maentwrog
- Pen Dal-Aderyn
- Maendy
- Maenclochog
- Madron
- Madresfield
- Madley
- Madingley
- Madeley Heath
- Madeley Court
- Madeley
- Madeley
- Madehurst
- Loch Maddy
- Maddington