| NAME | Clan/Family/Tartan |
| LACHLAN | MacLachlan |
| LAMB | Lamont |
| LAMBIE | Lamont |
| LAMMIE | Lamont |
| LAMOND | Lamont |
| LAMONDSON | Lamont |
| LAMONT | Lamont |
| LANDERS | Lamont |
| LANG | Leslie, MacDonald |
| LARISTON | Elliot |
| LAUCHLAN | MacLachlan |
| LAUDER | Lauder |
| LAURENCE | MacLaren |
| LAW | MacLaren |
| LAWRIE | Gordon, Maclaren |
| LAXFRITH | Hay |
| LEAN | Maclean |
| LECKIE | MacGregor |
| LEES | Gillies |
| LEMOND | Lamont |
| LENNIE | Lennie, Buchanon |
| LENNOX | Lennox, Macfarlane, Stewart |
| LENNY | Buchanon |
| LEPER | Napier |
| LESLIE | Leslie |
| LEVACK | Livingstone, Stewart of Appin |
| LEWIS | MacLeod of Lewis |
| LEYS | Farquharson |
| LIMOND | Lamont |
| LIMONT | Lamont |
| LINDSAY | Lindsay |
| LINKLATER | Sinclair |
| LIVINGSTON | Livingston, MacDougall, Stewart of Appin |
| LIVINGSTONE | MacDougall, Stewart of Appin |
| LOBBAN | Logan, Maclennan |
| LOCKERWORT | Hay | | LOCKHART | Ross |
| LOGAN | Logan, Maclennan |
| LOUDON | Campbell |
| LOVE | Love, Mackinnon, Mackinven |
| LOW | Maclaren, Mackinnon |
| LUCAS | Lamont, Mackinnon |
| LUKE | Lamont |
| LUMSDEN | Lumsden, Forbes |
| LYALL | Sinclair |
| LYON | Farquharson, Lamont |
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