- Merlaweskey
- Merle's Court
- Merlin's Rents
- Mermaid Court
- Mermaid Tavern
- Merrett's Buildings
- Merryfield's Rents
- Metropolitan Asylums' Board Offices
- Metropolitan Bank Buildings
- Metropolitan Buildings
- Metropolitan Free Hospital
- Metropolitan Market, West Smithfield
- Mewse, Devonshire Square
- (St.) Michael ad bladum
- (St.) Michael Aldgate
- (St.) Michael atte Corne
- (St.) Michael Bassishaw
- (St.) Michael by Christ Church
- (St.) Michael Candlewick Street
- (St.) Michael Candlewick Street, Lane of
- (St.) Michael Coldabey
- (St.) Michael Crokede lane, Lane of
- (St.) Michael Crooked Lane
- (St.) Michael Crooked Lane Churchyard
- (St.) Michael Huggin Lane
- (St.) Michael in Foro ad Bladum
- (St.) Michael in Fridaistrete
- (St.) Michael juxta Macellum
- (St.) Michael le Querne
- (St.) Michael Queenhithe
- (St.) Michael super Ripam Regine
- (St.) Michael towards London Bridge
- (St.) Michael upon Thames
- (St.) Michael Wood Street
- (St.) Michael, Paternoster Royal
- (St.) Michael's Alley
- (St.) Michael's Almshouses
- (St.) Michael's Cornhill
- (St.) Michael's Cornhill Churchyard
- (St.) Michael's Hill
- (St.) Michael's Lane, Seint Micheles-lane
- Middelborr Alley, Royal Mint Street
- Middell Alley
- Middelton Alley
- Middle Court
- Middle New Street
- Middle Row
- Middle Street
- Middle Temple
- Middle Temple Hall
- Middle Temple Lane
- Middlesex Court
- Middlesex House
- Middlesex Passage
- Middlesex Street
- (St.) Mighell's Lane
- Milborne's Almshouses
- Mildmay Chambers
- (St.) Mildred de Walebroc, upon Walebroke
- (St.) Mildred near Conhop
- (St.) Mildred Poultry
- (St.) Mildred, Bread Street
- (St.) Mildred's Court
- (St.) Mildrithe
- Miles' Rents
- Miles's Lane
- Milk Street
- Milk Street Buildings
- Milk Yard
- Mill Alley
- Mill Bridge
- Millard's Court
- Mille Dock
- Millers Court
- Milte Alley
- (St.) Miltheldrede upon Walbrook
- Milton Buildings
- Milton Street
- Mincing Lane
- Minoresses
- Minories
- Minories' Cross
- Minories' Ears
- The Mint
- Mint Street
- Le Mistrete
- Mitchel's Court
- Miter Court, Huggin Lane
- Miter Tayern
- Mitre Buildings
- Mitre Court
- Mitre Court Buildings
- Mitre Court Passage
- Mitre Square
- Mitre Street
- Mitre Tavern
- Mitre Tavern, Yard
- Mngenelane
- Modell Ally
- Modford Court