| H & H Books |
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|
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| HarpHaven Publishing |
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| Harriot Augusta Freeman |
| Harris and Harris |
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| Harrison |
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| Harrison and James Publishing |
| Harrison Martin |
| Harrison Smith & Robert Haas |
| Harrow Books |
| Harrowed Press |
| Harry E. Turner |
| Harry E. Wolff |
| Harry Gervais |
| Harry Margary |
| Harry N. Abrams |
| Harry N. Abrams & Mill Pond Press |
| Harry N. Abrams / SFBC |
| Harry Warner, Jr. |
| Hart Publishing |
| Hart Publishing Co. |
| Hart-Davis |
| Hart-Davis Education Limited |
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| Harvest / Harcourt |
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| Hatier |
|
| Hatier - G.T. Rageot |
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| Haunt Jaunts |
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| Haupt & Hammon |
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|
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| Hay House |
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| Hay Nisbet |
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| Hea Lugu |
| Head Music / What Noise Productions |
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| Healing Voice Publishing |
| Health Knowledge, Inc. |
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| Heart |
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| Heaven Lake Press |
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| Heavy Caliber Publishing LLC |
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|
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| Henry Frowde, Hodder & Stoughton |
| Henry G. Bohn |
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| Henry George and Co. |
| Henry Hardy Heins |
| Henry Holt |
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| Henselowsky Boschmann |
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| Heraclon / storybox.pl |
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|
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| Higher Life Development Services |
| Higherlife Development Services |
| Highflyer Press |
| Highgate Books |
| Highland Books |
| Highland Mountain Publishing |
| Highland Press |
| Highlands Publishing LLC |
| Highlights for Children |
| HighWay |
| HiJinks Ink Publishing |
| Hilari Bell |
| Hilaritas Press |
| Hildie McQueen |
| Hildy Silverman |
| Hilgendorff-Verlag GmbH |
| Hill and Wang |
| Hill Harow Books |
| Hill House |
| Hill House Publishers & Cemetery Dance Publications |
| Hill of Content |
| Hill Publications |
| Hill Street Press |
| Hillcrest Media |
| Hiller Creations Ltd. |
| HILLGREGG |
| Hilliard & Harris |
| Hillinger |
| Hillman Adventure Novel Classic |
| Hillman Books |
| Hillman Periodicals, Inc. |
| Hillman-Curl |
| Hillside Press |
| Hilltop Press |
| HillyBilly Feast Press |
| HiLoBooks |
| Hindered Souls |
| Hingston & Olsen Publishers |
| Hinkler / Pan Books |
| Hinkler Books |
| Hinstorff |
| Hinterland Sky Press |
| Hinton Pub |
| Hip Hop Comix n Flix |
| Hip Phoenix |
| Hiperion |
| Hipper Tiger Books |
| Hippo / Scholastic UK |
| Hippo Books |
| Hippocampus Press |
| Hippocrene Books |
| Hiraeth Books |
| Hiraeth Press |
| Hiraeth Publishing |
| Hiraethsff |
| Hireath Books |
| HiRisk Publications |
| Hirmer |
| Hirnkost |
| Hirschfield Bros. |
| Hirst Books Ltd |
| Hirst Publishing |
| HIS69 / Surree Limited |
| Historic Winston |
| Historical Books Limited |
| Historiska Institutionen |
| Historyradio.org |
| Hit World Press |
| HiTek Designs |
| Hitzig |
| Hive Collective |
| Hive Press |
| HJB Verlag |
| Hjemmet |
| HK Doodles |
| Hki |
| HM Communications, Inc. |
| HM Editora |
| HM Press |
| HMH Adult Audio |
| HMH Audio |
| HMH Books for Young Readers |
| HMH Publishing |
| HMH Young Readers Audio |
| HMSI |
| HNS Publishing |
| Hoanzl |
| Hobaugh Publications |
| Hobb's End Press |
| Hobbes End Publishing |
| Hobblebush Books |
| Hobby Japan |
| Hobgoblin Press |
| Hoch |
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| hockebooks |
| Hocus Pocus Publishing |
| HOD Publications |
| Hodder |
| Hodder & Stoughton |
| Hodder & Stoughton (Australia) |
| Hodder & Stoughton (NZ) |
| Hodder & Stoughton Audio Books |
| Hodder & Stoughton Ltd |
| Hodder and Stoughton |
| Hodder Arnold |
| Hodder Audio |
| Hodder Children's Books |
| Hodder Children's Books / Hodder Headline Australia |
| Hodder Education |
| Hodder Feature |
| Hodder Headline |
| Hodder Headline Audiobooks |
| Hodder Headline Australia |
| Hodder Paperbacks |
| Hodder Studio |
| Hodderscape |
| Hodge & Braddock |
| HodgePodge Press |
| Hodges, Figgis & Co. |
| Hodgson House |
| Hoëbeke |
| Hoegbotton & Sons |
| Hoepli |
| Hoeyenbos |
| Hofboekerij |
| Hofbuchhandlung Friedrich Gutsch |
| Hoffmann und Campe |
| Hofstra University Library |
| Hogarth |
| Hogarth (UK) |
| Hogarth / SFBC |
| Hogarth Press |
| Hogbin, Poole |
| Hohenheim |
| Hoja de Lata |
| Hökerberg |
| Hokulani Press |
| Hokulei Press |
| Hokuseido Press |
| Holabird House |
| Hold Fast Press |
| Holden |
| Holden & Hardingham |
| Holden-Day |
| Holerth Press |
| Holger Schildt |
| Holiday House |
| Holistic Design |
| Holladay House Publishing |
| Holland |
| Holland Studio Craft |
| Hollandia |
| Hollandsch Uitgeversfonds |
| Holle |
| Holley Trent |
| Holliday Publishing |
| Hollis & Carter |
| Hollis Thatcher Press |
| Hollitzer |
| Hollow Hills Publishing |
| Hollow Square Press |
| Holloway House Publishing Company |
| Holly A. Hook |
| Holly Hook |
| Holly Hook & Margo Ryerkerk |
| Holly Kelly |
| Holly Lisle |
| Holly Ryan |
| Holly S. Roberts |
| Holly Schindler |
| Holly Woods |
| Hollyridge Press |
| Hollyway Publishers |
| Hollywood Comics |
| Hollywood Tower Publications |
| Hollywoodland Audio |
| Holme Press |
| Holmes House Press |
| Holmgard Press |
| Holmquist |
| Holnap |
| Holo Writing LLC |
| Hologram Books |
| Holograms |
| Holos |
| Holsum Publishing Co. |
| Holt & Williams |
| Holt de Heke d'Osnabrük |
| Holt McDougal |
| Holt Paperbacks |
| Holt Smith |
| Holt, Rinehart and Winston |
| Holt, Rinehart and Winston / BCE |
| Holt, Rinehart and Winston / SFBC |
| Holt, Rinehart and Winston of Canada |
| Holt-Dryden Books / Henry Holt |
| Holy Angels / Moreland Group |
| Holy Cow Press |
| Holy Fire Publishing |
| Holyoake Press |
| Holyoke Enterprises |
| Holzinger |
| Holzwarth |
| Home & Van Thal |
| Home of the Damned |
| Homebound Publications Audio |
| Hometown World |
| Homeworld Press |
| Homo Scrivens |
| Homosapien Books |
| Homunculus |
| Homunculus House |
| Hondo Jinx |
| Honest Publishing |
| Honey Badger Press |
| Honey Phillips |
| Honey Phillips & Bex McLynn |
| Honeysuckle Pear |
| Honeysuckle Press |
| Honford Star |
| Hong Kong University Press |
| Hong Kong Writers Circle |
| Hönne / Gebrüder Zimmermann |
| Honno |
| Honor Raconteur |
| Honor Roll Publishing |
| Honorata Korpikiewicz |
| Honoré Champion |
| Hoof |
| Hooke Publishing |
| Hookham |
| Hookham and Carpenter |
| Hooligan Press |
| Hoopla Press |
| Hoopoe |
| HoorSpelFabriek |
| Hoot Productions |
| Hoover Institution Press |
| Hope Corner |
| Hope Publishing, LLC |
| Hopedale Press |
| HopeRoad |
| Hopper Creative Group |
| HOPS Press |
| Horace F. Turner |
| Horace Liveright |
| Horace Marshall & Son |
| Hörbuch Hamburg |
| Horizon |
| Horizon Book Promotions |
| Horizon Books |
| Horizon House |
| Horizon Press |
| Horizon Publishers |
| Horizon Publishing Group |
| Horizons de France |
| Horned Lark Press |
| Hörnemann |
| Horrific Books |
| Horrific Tales Publishing |
| Horrified Press |
| Horrified Press / Thirteen O'Clock Press |
| Horror Australis |
| Horror Bound Magazine Publications |
| Horror Bound Publications |
| Horror Carousel |
| Horror Express Publications |
| Horror Senryu Journal |
| Horror Sleaze Trash |
| Horror Tree |
| Horror World |
| Horror Writers Association |
| Horror's Head Press |
| HorrorAddicts.net Press |
| HorrorBabble |
| Horrorfeminista |
| Horrorfind.com |
| Horrorsmith Publishing |
| Hors Collection |
| Horse Fly Studios |
| Horsemen of the Apocalypse |
| Horseshoe Publications |
| Horseshoe Publishing |
| Horus (Dutch) |
| Horus Publishing |
| Horwitz |
| Host |
| Host of the Hills |
| Host Publications |
| Hot Air Society |
| Hot Biscuit Productions |
| Hot Box Publishing |
| Hot Chocolate Press |
| Hot Ink Press |
| Hot Key Books |
| Hot Methods / Short Story Press |
| Hot Pancakes Limited |
| Hot Penny Press |
| Hot Sauce Publishing |
| Hotel Eviltry |
| HotGeekBooks |
| HotGhost Productions |
| Hotsa'at ha-metargem |
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| Hotspur Publishing |
| Houghton and Scott-Snell |
| Houghton Mifflin |
| Houghton Mifflin / BCE |
| Houghton Mifflin / BOMC |
| Houghton Mifflin / Houghton Mifflin Harcourt |
| Houghton Mifflin / QPBC |
| Houghton Mifflin / SFBC |
| Houghton Mifflin Australia |
| Houghton Mifflin Books for Children |
| Houghton Mifflin Books for Children / SFBC |
| Houghton Mifflin Canada |
| Houghton Mifflin Harcourt |
| Houghton Mifflin Harcourt / SFBC |
| Houghton Mifflin Harcourt and Blackstone Publishing |
| Houghton Publishing Co. |
| Houghton, Mifflin and Company |
| Houghton, Osgood and Company |
| Hounslow Press |
| Hourglass Productions |
| House Carfax Publications |
| House of 1000 Beers |
| House of Anansi Press |
| House of Collectibles |
| House of DarkAngel Publishers |
| House of Dominion |
| House of Dominion / Prime Books |
| House of Falmouth |
| House of Fantasy |
| House of Field |
| House of Field-Doubleday Inc. |
| House of Fire Press |
| House of Greystoke |
| House of Horror |
| House of Lit |
| House of Lochar |
| House of Milan |
| House of Morgue |
| House of Sages |
| House of Shadows |
| House of Sprouts |
| House of Stratus |
| House of Stuart |
| House of Subdivisions |
| House of White |
| House of Zolo |
| House on the Horizon Books |
| House Panther Publishing |
| House von Darkmoor |
| House-Warven |
| House-Warvne Publishers |
| Household Words |
| Housemartin Classics |
| Houston Public Library |
| Houtekiet |
| Houthaven Publications |
| HOW Books |
| Howard & Evans |
| Howard Baker |
| Howard Books |
| Howard DeVore |
| Howard Fast |
| Howard H. Prouty |
| Howard Publishing Company |
| Howel Works |
| Howell Canyon Press |
| Howell Publishing |
| HOWL Society Press |
| Howler Publications |
| Howler Publishing |
| Howling at the Moon Productions |
| Howling Books |
| Howling Corgi Press |
| Howling Unicorn Press |
| Howson Books |
| Hoyts' Hobbitat |
| HP Books |
| HP Mallory |
| HQ |
| HQ Digital |
| HQ Fiction |
| HQ Young Adult |
| HQN Books |
| HQN Books (Australia) |
| HQN Books / SFBC |
| Hr. Ferdinand |
| HRB Publishing |
| HSH Productions |
| HSJ |
| HSW Books |
| https://www.barebumbilly.com/about |
| Hub City Press |
| Hubbard Association of Scientologists |
| Hubbard Brothers |
| Hubbard Publishing Company |
| Hubbell Publishing Co. |
| Hudson Books |
| Hudson Hills Press |
| Hudson Indie Ink |
| Hudson Publishing |
| Hudson-Kimberly Publishing Co. |
| Huge Print Press |
| Huggle Bug Books |
| Hugh Howey |
| Hugh M. Hefner |
| Hugh Rees |
| Huginn & Muninn |
| Huginn Muginn Press |
| Hugo Gernsback |
| Huia Publishers |
| Huitième art |
| Hula Records |
| Hulton Press |
| Human & Rousseau |
| Human Being Publishing |
| Human Legion Publications |
| Humanarium Publishing |
| Humanitas |
| Humanitas (Romania) |
| Humanities Press |
| Humanities Research Center, University of Texas |
| Humanities-Ebooks |
| Humanity Publishing Company |
| Humanoids |
| Humble Bundle, Inc. |
| Humble Hogs Press |
| Humble Quill |
| Humboldt |
| Humboldt Publishing Company |
| Humdrumming |
| Humerus Intentions Publishing |
| Hummelburg |
| Hummingbird Books |
| Hummingbird House Press |
| Hummingbird Press |
| Humorama, Inc. |
| Humphrey Milford Amen House |
| Humphrey Toulmin |
| Humpty Dumpty Publishing |
| Hundt |
| Hungry Buzzard Press |
| Hungry Goat Press |
| Hungry Griffin Publishing |
| Hungry Horse |
| Hungry Point Press / Malice Publishing |
| Hungry Tiger Press |
| Hunia |
| Hunna |
| Hunna Bunna Press |
| Hunt & Peck Press |
| Hunt and Eaton |
| Hunt Haven Press |
| Hunt Press |
| Hunter and Longhurst |
| Hunter Books |
| Hunter House |
| Hunter Publishers |
| Hunter Shea |
| Hunter, Robinson |
| Hunting Monsters Press |
| Huntington House |
| Huntington Library |
| Huntress Productions |
| Hurd and Houghton |
| Hurst & Blackett |
| Hurst & Company |
| Hurst and Blackett |
| Hurst and Co. |
| Hurst, Chance, and Co., and R. Jennings |
| Hurst, Robinson, & Co. |
| Hurtig |
| Hurtubise |
| Hurtubise HMH Jeunesse |
| Huso Editorial |
| Hustle & Heart Films |
| Hustler / World-Wide Publishing |
| Huston |
| Hutchinson |
| Hutchinson & Co. |
| Hutchinson (Australia) |
| Hutchinson Children's Books |
| Hutchinson Heinemann |
| Hutchinson Junior Books |
| Hutchinson of Australia |
| Hutchinson's Books for Young People |
| Huts |
| Hutton Grove |
| Huw Langridge |
| Huza Press |
| HVF Publishing |
| HVF Representações |
| HW Press |
| Hyacinth Girl Press |
| Hyborean Press |
| Hybrid Fiction |
| Hybrid Global Publishing |
| Hybrid Publishers |
| Hybrid Publishers Australia |
| Hybrid Sequence Media |
| Hydra / Random House |
| Hydra House |
| Hydra Productions Online |
| Hydra Publications |
| Hydromel |
| Hyland House |
| Hylas Publishing |
| Hymenaeus House |
| Hypatia Press |
| Hypatia Press (UK) |
| HyperBooks Online |
| Hyperion |
| Hyperion / Melcher Media |
| Hyperion Avenue |
| Hyperion Books |
| Hyperion Books / QPBC |
| Hyperion Books / SFBC |
| Hyperion Books for Children |
| Hyperion Books for Children / SFBC |
| Hyperion Paperbacks |
| Hyperion Paperbacks for Children |
| Hyperion Paperbacks for Children / Troll Book Club |
| Hyperion Press |
| Hypernode Press |
| Hypernova Publishing |
| Hyperspace High |
| Hyperspace Media |
| Hypertour Publications |
| HyperVerse Books |
| HyphenPunk |
| Hypnos Magazine |
| Hypostyle Hall Publishers |
| Hyspamérica |
| Hythloday Press |
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