| Literary Crush Publishing | Etats-Unis | 3 |
| LitJoy Crate | Etats-Unis | 9 |
| Litl'Book | | 34 |
| Lito | France | 427 |
| Litos | France | 24 |
| Litté | France | 3 |
| Littéraires de France | France | 2 |
| Litterature audio.com | France | 77 |
| Littérature Chinoise | | 4 |
| Little A | Etats-Unis | 10 |
| Little Bee Books | Etats-Unis | 3 |
| Little Big Man | France | 4 |
| Little Big Monsters | | 1 |
| Little Books | Islande | 2 |
| Little Island Books | Irlande | 15 |
| Little Tiger Press | | 8 |
| Little Urban | France | 230 |
| Little, Brown and Company | Etats-Unis | 509 |
| Little, Brown Book | Angleterre | 235 |
| Little, Brown Book Group | Angleterre | 6 |
| Little, Brown Spark | Etats-Unis | 3 |
| Littlehampton Book Services | France | 2 |
| Liv' | France | 55 |
| Live Edge Publishing | | 1 |
| Liveright | | 27 |
| Liverpool University Press | Etats-Unis | 0 |
| Livin'Astro | France | 1 |
| Livr'S | Belgique | 191 |
| Livraphone | France | 21 |
| Livraria Lello | Portugal | 12 |
| Livre Lettre | | 1 |
| Livre Ouvert | France | 5 |
| Livre unique | France | 7 |
| Livres & compagnie | | 3 |
| Livres Agités | France | 4 |
| Livres du Monde | France | 2 |
| Livres en vie | France | 2 |
| Livres Ka | France | 1 |
| Livres sans frontières | France | 10 |
| Livresque | | 216 |
| Livrior | | 1 |
| Livros d'Hoje | Portugal | 2 |
| Lizzie | | 936 |
| LJR | | 2 |
| LL | | 6 |
| Llewellyn Publications | Etats-Unis | 23 |
| LMD | France | 1 |
| LME | | 7 |
| LNN | | 1 |
| Lo | | 1 |
| Lo-Ély | Canada | 27 |
| Lobster Films | | 2 |
| Loco | France | 2 |
| Locus Solus | | 63 |
| Loess | France | 2 |
| Loewes | Allemagne | 9 |
| Logiques | Canada | 20 |
| Logitell | Canada | 2 |
| Logos | Italie | 2 |
| Loisirs et Pédagogie | Suisse | 4 |
| Loisirs Livres | France | 5 |
| Lokomodo | France | 63 |
| Lolant | France | 1 |
| Lolli | Angleterre | 2 |
| Lollipop | | 15 |
| Lomond | Angleterre | 10 |
| Lonely Planet | France | 109 |
| Long Shu Publishing | France | 3 |
| Long Tail Book | Corée du Sud | 1 |
| Longanesi | Italie | 23 |
| Longman | France | 24 |
| Loose Id | France | 11 |
| Lord Sullivan | France | 4 |
| Lordkarsen | | 16 |
| Lore Seekers Press | | 2 |
| Lorelei | | 6 |
| Lorelie Brown | Etats-Unis | 1 |
| LoreSmyth | Pays-Bas | 1 |
| Lorestone | France | 11 |
| Lorimer | Canada | 2 |
| Loris Talmart | France | 1 |
| Lorraines Frémont | France | 1 |
| Los Brignolès | France | 1 |
| Losada | Argentine | 3 |
| Lost Island Press | Etats-Unis | 2 |
| Lou Magma | France | 2 |
| Loubatières | | 14 |
| LouD | | 6 |
| Louis Vuitton | | 7 |
| Louise Bäckelin | Suède | 1 |
| Louise Courteau | France | 17 |
| Louison | | 23 |
| Loulou et compagnie | | 26 |
| Lounak | | 7 |
| Love Lane Books | Angleterre | 88 |
| Love Short | | 2 |
| Love Spell | Etats-Unis | 3 |
| LoveBooks | Pays-Bas | 4 |
| Loveswept | Etats-Unis | 32 |
| LPM | | 2 |
