| Walter & Alice | Canada | 1 |
| Walter Beckers | France | 14 |
| Wanga Comics | France | 3 |
| Ward River Press | Irlande | 3 |
| Warne | France | 23 |
| Warner Books | Etats-Unis | 73 |
| Wartberg | Allemagne | 22 |
| Wartburg | Allemagne | 2 |
| Warum | France | 47 |
| Washington Square Press | Etats-Unis | 36 |
| WaterBrook Press | Etats-Unis | 9 |
| Waterhouse Press | | 20 |
| Waterside | Etats-Unis | 1 |
| Waterstone Media | | 4 |
| Watkins Publishing | Angleterre | 1 |
| Watson-Guptill | Etats-Unis | 3 |
| Wave books | | 2 |
| Waxmann | Allemagne | 1 |
| Wayne State university press | | 2 |
| Waystone Press | | 1 |
| Webedia Books | France | 12 |
| WEBTOON Unscrolled | | 18 |
| Wednesday Books | | 127 |
| Weidenfeld & Nicolson | Angleterre | 113 |
| Weight Watchers | France | 4 |
| Weigl educational publishers | Canada | 1 |
| Weinstein Books | Etats-Unis | 4 |
| Weirdpunk books | Etats-Unis | 3 |
| Weiser Books | | 8 |
| WEKA | | 1 |
| Welbeck Publishing Group | Angleterre | 26 |
| Weldon Owen | Etats-Unis | 5 |
| Well There It Is Publishing | Etats-Unis | 1 |
| Wellan Inc. | Canada | 85 |
| Wellfleet Press | Etats-Unis | 4 |
| WeltTrends | Allemagne | 2 |
| Wendy Lamb Books | Etats-Unis | 11 |
| Westholme Publishing | Etats-Unis | 1 |
| Westward Publishing | | 2 |
| Wetta | | 21 |
| Weyrich | Belgique | 69 |
| WH Allen | Angleterre | 9 |
| Whiskered Mysteries | Etats-Unis | 7 |
| Whiskey Creek Press | Etats-Unis | 7 |
| Whitcombe and Tombs | Nouvelle-Zélande | 1 |
| White Lion Publishing | Angleterre | 11 |
| White Press | Allemagne | 1 |
| White Sadhu Publishers | | 1 |
| White Star | France | 58 |
| White Sun Press | Etats-Unis | 2 |
| White's Books | Etats-Unis | 4 |
| WhitePearl | France | 1 |
| Whitman Publishing | Etats-Unis | 1 |
| Whitman-France | France | 4 |
| Why Not | France | 5 |
| Wilco | France | 1 |
| Wild Child Publishing | Etats-Unis | 4 |
| Wild Nature Press | Angleterre | 2 |
| Wilde City Press | Etats-Unis | 2 |
| Wilder Publications | France | 4 |
| Wildproject | France | 39 |
| Wildside Press | Etats-Unis | 15 |
| Wildstorm | Etats-Unis | 14 |
| Wiley | France | 30 |
| William Blake & Co. | France | 7 |
| William Collins | Ecosse | 42 |
| William Heinemann | Angleterre | 29 |
| William Morrow & Company | Etats-Unis | 396 |
| Williams | France | 2 |
| Wilton Press | Angleterre | 4 |
| Wimzi | | 1 |
| Windmill books | Angleterre | 29 |
| Wings Books | Etats-Unis | 4 |
| Winioux | | 8 |
| Winterfields | | 1 |
| Wisdom Publications | Etats-Unis | 1 |
| Wisehouse | | 5 |
| Witch Way Publishing | Etats-Unis | 2 |
| Witches' Almanac | | 1 |
| Wizard Books | Angleterre | 6 |
| Wizards of the Coast | France | 28 |
| WMG Publishing | | 10 |
| Wolf publishing | Angleterre | 1 |
| Wolfhound Press | Irlande | 8 |
| Wombat | France | 37 |
| Women’s Prize for Fiction | Etats-Unis | 1 |
| Wooden Books | | 3 |
| Wooz éditions | France | 0 |
| Word Horde | Etats-Unis | 1 |
| Word West | | 3 |
| WordFire Press | | 5 |
| Wordiz | France | 2 |
| Wordsworth | Angleterre | 301 |
| Workman | Etats-Unis | 19 |
| World Crisis Crew | France | 1 |
| World Editions | | 3 |
| World Weaver Press | | 5 |
| Worldmaker Media | Etats-Unis | 8 |
| Worth Press | | 2 |
| Wow | | 4 |
