| Tornade | France | 8 |
| Torquere Press | | 1 |
| Torticolis et Frères | Suisse | 6 |
| Toth | | 11 |
| Touchstone Books | Etats-Unis | 39 |
| Tourbillon | France | 211 |
| Touret | France | 18 |
| Tourisme & Découvertes | | 1 |
| Tournesol | France | 10 |
| Tournez la page | France | 2 |
| Tournon | France | 23 |
| Tous lire | France | 1 |
| tout l'univers | France | 1 |
| TPub | | 3 |
| Trabucaire | France | 4 |
| Tractors & Heels LLC | | 1 |
| Trafalgar Square | France | 1 |
| Trajectoire | France | 45 |
| Tramp Press | Irlande | 3 |
| Trampoline | | 3 |
| Transaction Publishers | Etats-Unis | 1 |
| Transatlantic Press | France | 7 |
| Transatlantiques | France | 1 |
| Transboréal | France | 142 |
| Transcontinental | France | 14 |
| Transignum | France | 1 |
| Transimaginaires | | 4 |
| Transit | France | 14 |
| Transworld | Irlande | 4 |
| Transworld digital | France | 54 |
| Trapeze | | 30 |
| Trash | | 17 |
| Traugott Bautz | Allemagne | 1 |
| Travelin' Hoosier Books | Inde | 2 |
| Traverse | | 6 |
| Tre Lune | Italie | 1 |
| TRE60 | Italie | 1 |
| Trécarré | France | 52 |
| Tredition | | 8 |
| Treffendel | | 1 |
| Trèfle à quatre feuilles | Canada | 2 |
| Treize étrange | France | 53 |
| Treizième Lune | France | 2 |
| Trepidatio | Etats-Unis | 4 |
| Treville | France | 2 |
| Triad | Etats-Unis | 2 |
| Triangle postals | | 2 |
| Triarchy Press | Angleterre | 1 |
| Triartis | France | 13 |
| TRIAS | Allemagne | 4 |
| Tribew | | 1 |
| Tribord | France | 3 |
| Trilogie Éditions | France | 9 |
| Trinity University Press | Etats-Unis | 3 |
| Trinôme | France | 5 |
| Trinquette Publishing | Etats-Unis | 6 |
| Triptyque | France | 52 |
| Triskel | France | 7 |
| Triskele Books | Angleterre | 3 |
| Tristram | France | 79 |
| Triumph | Etats-Unis | 1 |
| Trois | France | 4 |
| Trois Petits Points (Huleux) | | 12 |
| Trois.L. | | 3 |
| Trompe-l'oeil | France | 1 |
| Trop Mad | France | 1 |
| Tropen | Allemagne | 2 |
| Tropismes | France | 9 |
| Troubador Publishing | | 8 |
| Trouble | France | 4 |
| True Myths Press | | 1 |
| TSR | France | 11 |
| Tsuru | | 1 |
| Tubonia | France | 3 |
| Tuk-tuk | | 1 |
| Tule Publishing | Etats-Unis | 5 |
| Tundra Books | France | 33 |
| Tunué | Italie | 2 |
| Tupperware | France | 4 |
| Turner Publishing | Etats-Unis | 4 |
| Turquoise | | 8 |
| Turtleback Books | Etats-Unis | 10 |
| Tusitala | | 17 |
| Tusquets | France | 33 |
| Tutti Frutti | France | 7 |
| Tutti Quanti | | 4 |
| TuttiStori | | 11 |
| Tuttle | France | 24 |
| Twayne Publishers | Etats-Unis | 1 |
| Twelve | France | 12 |
| Twenty7 | | 5 |
| Twinkle | France | 21 |
| Twisted E-Publishing | | 35 |
| Two Books | | 1 |
| Two Dollar Radio | Etats-Unis | 6 |
| Two Lines Press | | 4 |
| Two Roads | Angleterre | 26 |
| Two Waves Books | Etats-Unis | 1 |
| Twopenny Books | Angleterre | 1 |
| Txalaparta | France | 2 |
