Regions of United Kingdom
- Madderty
- Maddan
- Lough Macrory
- Macringans Point
- Macosquin River
- Macosquin
- Lough Macnean Upper
- Lough Macnean Lower
- Macmerry
- Macleods Maidens
- Mackworth
- Mackenzie’s Rock
- Machynlleth
- Island MacHugh
- Machrihanish Bay
- Machrihanish
- Machrie Water
- Machrie Bay
- Afon Machno
- Machir Bay
- Machen
- Machany Water
- Macfinn Lower
- Macduff
- Mac Donnell Race
- Ben Macdui
- Macclesfield Canal
- Macclesfield
- Maccaroni Channel
- Loch Macaterick
- Mablethorpe
- Loch Maberry
- Loch Maaruig
- Lythe
- Lytham
- Burn of Lyth
- Lytchett Minster
- Lytchett Matravers
- Lyrie Geo
- Lyren
- Lyre Geo
- Lyrawa Bay
- Lyonshall
- River Lyon
- Loch Lyon
- Glen Lyon
- Lynton
- Lynsted
- Lynn of Morvern
- Lynn Knock
- Lynn Deeps
- Lynn Channel
- Lynmouth
- River Lynher
- Lyng
- Lyng
- Lynford Hall
- Lyne Water
- Lyness
- Lyneham
- Lynedale House
- River Lyne
- River Lyne
- Lyne
- Lyne
- Lyndhurst
- Point Lynas
- Lympstone
- Lympsham
- Lympne
- Lymm
- Lyminster
- Lymington River
- Lymington
- Lyminge
- Lyme Regis
- Lyme Bay
- Lye
- Lydstep
- Lydney
- Lydlinch
- Lydiate
- Lydiard Tregoze
- Lydiard Millicent
- Lydham
- Lydgate
- Lydford
- Lydden
- Lydd
- Lydbury North
- Lydbrook
- River Lyd
- Lybster
- Afon Lwyd
- Luxulian
- Luxborough
- Lutton
- Lutton
- Lutterworth
- Luton Hoo
- Luton
- Luton
- Luthrie
- Luther Water
- Luston
- Lustleigh
- Lusta
- Luss Water
- Ness of Lussetter
- Lussa River
- Lussa Bay
- Glen Lussa
- Luss
- Ben Luskentyre
- Luskentyre
- Lusby
- Lusa
- Lurigethan
- Lurg Mhor
- Lurg Hill
- Lurgashall
- Lurgan
- Loch Lurgainn
- Loch Lure
- Lupton
- Luppitt
- Lunning Sound
- Lunning Head
- Skerry of Lunning
- Lochan Lùnn Dà-Bhrà
- Lunna Ness
- Lunna Holm
- Lung Ness
- Lunga Skerries
- Srath Lungard
- Loch Lungard
- Lunga
- Lunga
- Lunga
- Lune Head House
- Lune Forest
- River Lune
- River Lune
- Lundy
- River Lundy
- Lunds Fell
- Lundin Links
- Loch Lunndaidh
- Loch Lundie
- Loch Lundie
- Lundie
- Lund
- Luncarty
- Lunan Water
- Lunan Burn
- Lunan Bay
- Lunan
- Lumsden
- Lumps Fort
- Lumphanan
- Lulworth Cove
- Lulsgate Bottom
- Lullington
- Lui Water
- Luirsay Dubh
- Luinga Mhòr
- Sound of Luing
- Luing
- Loch Luichart
- Luibeg Burn
- Glen Lui
- Lugwardine
- Lugton Water
- Lugton
- Lug of Duncansby
- Luggie Water
- River Lugg
- Lugate Water
- Lugar Water
- Lugar
- Luffness
- Luffincott
- Ludworth
- Ludwell
- Ludlow
- Ludham
- Ludgvan
- Ludgershall
- Ludgershall
- Ludford Parva
- Ludford Magna
- Lude House
- Luddington in the Brook
- Luddington
- Luddesdown
- Luddenham
- Luddenden Foot
- Ludchurch
- Ludbrook
- Ludborough