| Lademann | <635> |
| Lambertius | <512> |
| Lambrecht | <212>, <513> - <516> |
| Lampe (Lempe) | <45a>, <80>, <517> - <521>, <524>, <549>, <655>, <740>, <849>, <902>, <904> |
| Landsmann | <270>, <325>, <367>, <522> - <523>, <1046>, <1067> |
| Lange | <1061> |
| Langebartels | <194> |
| Langeheine | <7>, <456>, <524> - <529>, <546>, <729>, <814>, <972>, <1081>, <1099> |
| Langemann | <194>, <401>, <530> - <531>, <539>, <642a>, <686>, <689>, <862>, <954>, <960> |
| Langenberg | <532> |
| Langheld | <1066> |
| Langkop | <532a> |
| Latermann | <634> |
| Lauenroth | <533> |
| Lautenbach | <534> |
| Lecke | <535> |
| Leher | <536> - <538> |
| Lehmberg (Lemberg) | <47>, <540> |
| Lehne | <539> |
| Lempe | siehe Lampe |
| Lentz | <541> - <542> |
| Leo | <968> |
| Leunig | <816> |
| Leye | <543> |
| Liebe | <1051a> |
| Lieke (Lieck) | <91c>, <544> |
| Liekefett | <545> |
| Lies (Lis) | <30>, <80>, <316>, <403>, <497>, <546> - <549>, <804>, <844>, <926a>, <981> |
| Liewald | <555> |
| Lindemann | <223>, <765>, <885> |
| Linden | <91b>, <1083> |
| Lindenzweig | <783> |
| Linne | <550> |
| Lippe | <747> |
| Lippmann | <1098a> |
| Lochte | <551>, <630a> |
| Löckers | <552> |
| Loges | <793> |
| Löhmann | <5> |
| Löhr | <365>, <553> |
| Löhrmann | <275>, <649> |
| Loose | <493> |
| Lüchau | <37> |
| Lübbe | <635> |
| Ludewig | <571> |
| Lüddecke (Lüdecke, Lüddeke, Lüdeke) | <195>, <285>, <423>, <517>, <554> - <570>, <768>, <969>, <1016>, <1037> |
| Lüer (Lüders, Lüder, Lühr) | <146>, <237>, <274>, <342>, <572> - <586b>, <652>, <934> |
| Lütge (Lütgens, Lütje) | <385>, <587>, <962> |