- Lacy
- Lade
- Laing
- Lait
- Lake
- Lamb
- Lambert
- Lambert, James
- Lambourne
- Lane
- Langdale
- Langdon
- Langmead
- Langridge
- Langton
- Lashford
- Lasseter
- Latrobe
- Lavender
- Lavington
- Lawrence
- Le Count
- Le Dykere
- Leachman
- Leaver/Lever
- Lee
- Lee-Hankey
- Leedes
- Leeney
- Leeson
- Leeves
- Lefroy
- Legas
- Legg/Legge
- Leland
- Lelliott
- Leney
- Leng
- Lennard/Leonard
- Lennox
- Leslie
- Lester
- Letterman
- Levett
- Lewer
- Lewes/Lewis
- Lewinna
- Lewknor
- Lickfold
- Lillywhite
- Linn
- Linter
- Lintott
- Lister
- Little
- Littleton
- Lloyd, Christopher
- Long
- Longford
- Longley
- Lopdell/Lobdell
- Lovegrove
- Loveland
- Lowdell
- Lower
- Lowerson
- Lowther
- Loxwood
- Lucas
- Luck
- Ludlow
- Luff
- Lulham
- Lumley
- Lunsford
- Lush
- Luther
- Luxford
- Lysons
