- (St.) Nicholas Olave, Churchyard
- (St.) Nicholas Old Fish Street
- (St.) Nicholas Shambles
- (St.) Nicholas Shambles Lane
- (St.) Nicholas Welleys, Wyllyms
- (St.) Nicholas West Fish Street
- (St.) Nicholas Westpiscar
- (St.) Nicholas within, without, Newgate
- (St.) Nicholas without Algate
- Nicholas' Almshouse
- Nicholas Lane
- Nicholas Passage
- Nicholl Square
- Nicholson's Wharf
- Nightingale Court
- Nightingale Lane, East Smithfield
- Nightingale Place
- Nine Gardens
- Nixon's Square
- Noble Street
- Nofolk House
- Nomanneslonde, Nomansland
- Nonesuch Court, Gracechurch Street
- Nonne Alley
- Nonsuch House
- (Duke of) Norfolk', Place
- Norhampton Inn
- North Alley
- North Buildings
- North Court
- North London Railway
- North Street
- Northumberland Alley
- Northumberland Back Alley
- Northumberland Court
- Northumberland House
- Northumberland House, Aldgate
- Northumberland Mews
- Northumberland Place
- Northumberland Place, Aldgate
- Norton Folgate
- Norwich Court
- Norwich Street
- Novtstrate
- Nun Court
- Nunnery Court
- Oak Tree
- Oakey Street
- Oakley's Yard
- Oakey's Yard in Boyle
- Oaklyes Court, Yard
- Oat Lane
- Oate Lane, Billingsgate
- Offele Alley
- Officiality of London
- Okebourn
- (St.) Olave at Crutched Friars
- (St.) Olave Bradestrat
- (St.) Olave Bread Street Hill
- (St.) Olave by London Bridge
- (St.) Olave by the Tower or versus Turrim
- (St.) Olave de Cripelesgate
- (St.) Olave Eldiurie
- (St.) Olave Hart Street
- (St.) Olave in Colchirch Lane
- (St.) Olave in the Shamb1es
- (St.) Olave Jewry
- (St.) Olave Mogwell Street, de Mugwellestrate
- (St.) Olave near Martelane
- (St.) Olave next Dowgate
- (St.) Olave Old Jewry
- (St.) Olave Silver Street
- (St.) Olave Silver Street Churchyard
- (St.) Olave towards Alegate
- (St.) Olave without Bishopsgate
- Old Artillery Ground
- The Old Bailey
- Old Bedlam Court
- Old Bedlam Lane
- Old Bell Inn
- Old Bethlehem Hospital
- Old Bethlem
- Old Bethlem, Street
- Old Brewers Yard
- Old Brewhouse Yard
- Old Broad Street
- Old Change
- Old Change Hill
- Old City Chambers
- Old Dean's Lane
- Old Dog
- Old Exchange
- Old Fish Market
- Old Fish Street
- Old Fish Street Hill
- Old General Post Office
- Old Horseshoe Wharf
- Old Jewry
- Old Jewry Chambers
- Old Lane