| Ladybird Books | Angleterre | 4 |
| Ladylit | | 6 |
| Laguasso | France | 1 |
| Laha | Bénin | 1 |
| Lajouanie | | 69 |
| Lajouanie | France | 55 |
| Lake Union Publishing | | 48 |
| Lakehouse press | | 4 |
| Laksa media | Canada | 2 |
| LAL Creations | France | 0 |
| Lamaindonne | France | 1 |
| Lamarre | France | 6 |
| Lamiroy | France | 40 |
| Lampe de Poche | France | 5 |
| Lance & Letters Press | | 1 |
| Lancelot | | 2 |
| Lanctôt | Canada | 6 |
| Land | France | 12 |
| Landsom Media | France | 1 |
| Langlaude | France | 5 |
| Langlois | | 19 |
| Langue au chat | Belgique | 66 |
| Langue pour tous | France | 6 |
| Lanore | France | 20 |
| LaNovel | France | 37 |
| Lansdalls | | 26 |
| Lanskine | France | 12 |
| Lansman | Belgique | 47 |
| Lantana Publishing | Angleterre | 1 |
| Lantern Publishing Media | Etats-Unis | 4 |
| Lanternfish Press | Etats-Unis | 3 |
| Lapérouse | France | 6 |
| Lapin | France | 125 |
| Lapis | | 8 |
| Lapouniland | France | 1 |
| Lappan | | 3 |
| Larcier | France | 21 |
| Laree Bailey Press | | 1 |
| Large Vision | France | 3 |
| Largo | | 1 |
| Larousse | France | 2029 |
| Larousse / Sélection du Reader's Digest | France | 10 |
| Laska | Canada | 128 |
| Last Gasp | Etats-Unis | 2 |
| Laterit | France | 1 |
| Laterza | Italie | 4 |
| Latomus Bruxelles | | 2 |
| Latticework Publishing | | 3 |
| Latvian Literature | Lettonie | 2 |
| Lauma | France | 2 |
| Laura Mare | France | 10 |
| Laurel | France | 4 |
| Laurel-Leaf | France | 20 |
| Laurence King | | 11 |
| Laurence Teper | France | 4 |
| Laurence Viallet | France | 2 |
| Laurent Guillet | | 1 |
| Laurent Rombaldi | France | 2 |
| Lavauzelle | France | 17 |
| Laville | France | 2 |
| Lavla | Italie | 2 |
| Lawrence Hill Books | France | 1 |
| Lazare et Capucine | | 8 |
| Lazhari Labter | Algérie | 1 |
| LB | France | 1 |
| LBS | | 31 |
| LC. | France | 10 |
| Le 9ème élément | | 2 |
| Le Baladin | Canada | 1 |
| Le Ballon | France | 32 |
| Le Baron Perche | France | 27 |
| Le Bas Vénitien | France | 1 |
| Le bateau ivre | | 3 |
| Le beau jardin | France | 10 |
| Le beau Monde | France | 3 |
| Le bec en l'air | France | 9 |
| Le Bélial' | France | 445 |
| Le Bord de l'Eau | France | 49 |
| Le bruit des autres | | 3 |
| Le bruit du monde | France | 46 |
| Le Bruit du temps | France | 40 |
| Le Buveur d'encre | France | 24 |
| Le Cadratin | Suisse | 3 |
| Le café des conteurs | France | 1 |
| Le Calame | France | 3 |
| Le calepin jaune | France | 5 |
| Le Calicot | France | 3 |
| Le calligraphe | | 2 |
| Le capitole | France | 2 |
| Le cargo imaginaire | France | 4 |
| Le Carnoplaste | | 2 |
| Le Castor Astral | France | 282 |
| Le Cavalier Bleu | France | 95 |
| Le Centurion | France | 13 |
| Le cercle d'or | France | 2 |
| Le cercle des amis de Marie Bashkirtseff | France | 1 |
| Le Cercle du Nouveau Livre | France | 9 |
| Le Cercle Européen du Livre | France | 9 |
| Le Chant des Voyelles | | 12 |
| Le Chant du Cygne | France | 4 |
