| Name | Total | Name | Total |
|---|---|---|---|
| Labelle | 1 | Langley | 2 |
| Labouchere | 1 | Langridge | 1 |
| Laceby | 12 | Langton | 13 |
| Lacey | 20 | Lanier | 1 |
| Lack | 1 | Lansdown | 1 |
| Lacoste | 1 | Lansdowne | 2 |
| Lacy | 1 | Lanton | 1 |
| Lacy, de | 2 | Lapidge | 1 |
| Ladlow | 23 | Larard | 1 |
| Lageard | 1 | Larcom | 3 |
| Laidlaw | 1 | Larder | 1 |
| Laing | 1 | Largie | 1 |
| Laird | 1 | Larkin | 2 |
| Laister | 2 | Larmiose | 1 |
| Lake | 9 | Larmouth | 1 |
| Lakeland | 14 | Larsen | 1 |
| Lakes | 1 | Larson | 2 |
| Lakin | 1 | Lascelles | 4 |
| Laking | 5 | Latchford | 1 |
| Lakschin | 1 | Latham | 31 |
| Lamb | 4 | Latimer | 2 |
| Lambe | 2 | Latterell | 1 |
| Lambert | 4 | Lattimer | 1 |
| Lambton | 1 | Lauder | 1 |
| Lamin | 1 | Laughton | 1 |
| Laming | 1 | Laverack | 1 |
| Lamming | 1 | Laverick | 1 |
| Lamont | 1 | Law | 4 |
| Lamplugh | 1 | Lawler | 1 |
| Lampson | 1 | Lawless | 1 |
| Lancaster | 12 | Lawman | 2 |
| Lancaster, of | 1 | Lawmon | 1 |
| Lance | 6 | Lawrence | 6 |
| Lancett | 1 | Laws | 7 |
| Lancey | 1 | Lawson | 7 |
| Lancien | 1 | Lawton | 1 |
| Land | 1 | Lay | 1 |
| Lander | 1 | Laybourn | 6 |
| Landers | 1 | Laybourne | 1 |
| Lane | 7 | Laycock | 1 |
| Lanes | 5 | Laycocke | 1 |
| Lang | 2 | Layton | 2 |
| Langdale | 2 | Lazenby | 2 |
| Langdon | 1 | Lazzarato | 1 |
| Lange | 1 | Leach | 1 |
| Langford | 1 | Leachman | 2 |
| Langford-Holt | 1 | Leahy | 1 |
| Langhome | 1 | Leak | 3 |
| Langhorne | 1 | Leake | 14 |
| Langhorst | 1 | Leaning | 1 |