- Kneseworth Key
- Knightengild
- Knightrider Court
- Knightrider Lane
- Knightrider Street
- Knightriders Street, West Smithfield
- Knight's Court
- Knowle's Court
- Knyges-Aleye
- Knyghttes Hill
- Kote
- Kynges-Aleye
- Kyngesditch
- Kyngeslane
- Kyron, Kyroun Lane
- Kyrune Lane
- La Beche
- Labour in Vain Court
- Labour in Vain Hill
- Labour in Vain Yard
- Lad Court
- Lad Lane
- Lady Bitch's House
- Lady Holles' School
- Lady's Yard
- Le Lamb
- Lamb Alley
- Lamb Court
- Lamb Court, Hart Street, Cripplegate
- Lamb Yard, Lamb's Yard, Lamb Alley, Bishopsgate
- Lambe Alley
- Lambard Hill Lane
- Lambarde Hill
- Lambeth Hill
- Lambourne Ward
- Lamb's Alley
- Lamb's Buildings
- Lamb's Chapel
- Lamb's Chapel Alley
- Lamb's Chapel Court
- Lamb's Conduit
- Lamb's Court, Abchurch Lane
- Lamb's Yard
- Lamorestrete
- Lancaster College
- Lancaster Place
- Lancaster, Soc. of
- Langbourn Chambers
- Langbourn Street
- Langbourn Ward
- The Langbourne
- Langebord
- Langthorn Court
- Larger's Yard
- Last and Ball Court
- Lauderdale Buildings
- Lauderdale Court
- Lauderdale House
- (St.) Laurence Candlewick Street
- (St.) Laurence Lundenestone
- (St.) Laurence Pountney Chapel
- (St.) Laurence Street
- (St.) Laurence Super Tamisian, next the Thames
- Laurence Lane
- Laurence Pountney Hill
- Laurence Pountney Lane
- Laurence Pountney Place
- (St.) Lawrence Alley
- (St.) Lawrence Jewry
- (St.) Lawrence Pountney
- (St.) Lawrence Pountney Churchyard
- (St.) Lawrence Pountney College
- Lays Court, St. Katherine's
- Le Neve Inn
- The Leaden Porch
- Leaden Portch
- Leadenhall
- Leadenhall Buildings
- Leadenhall Chambers
- Leadenhall Chapel
- Leadenhall Market
- Leadenhall Place
- Leadenhall Street
- Leather Lane
- Leatherdressers' Yard
- Leathersellers' Almshouses
- Leathersellers' Buildings
- Leathersellers' Company
- Leathersellers' Hall
- Le Leden Porch
- Le Ledenpentitz
- Le Ledenporch
- Lees Court
- Leg and Ball Alley
- Leg Tavern
- Legates Inn
- Leggesaleye
- Lennes Aleye
- (St.) Leonard, Foster Lane
- (St.) Leonard Eastcheap