Publishers
- Hazlitt, Gooden & Fox 1
- Headhunter Books 1
- Headline 4
- Heads (congleton) Ltd 1
- Heathfield Railway Publications 1
- Heimdal 1
- Heinemann 44
- Heinemann Educational Books 2
- Heinemann Quixote Press 2
- Heinemann Young Books 1
- Helena Osvaldova 1
- Helion & Company 28
- Helm Information 1
- Henderson Publishing 1
- Hendon Publishing Co. Ltd. 2
- Henrik Koppels Forlag 1
- Henry And Co. 1
- Henry Colburn And Co. 1
- Henry Frowde 50
- Henry G. Bohn 4
- Henry Garnett And Co., Limited 1
- Henry Herbert, Publisher 1
- Henry Holt and Company 5
- Henry Melland 2
- Henry Mozley And Son 1
- Henry Regnery Company 1
- Henry Thomas 2
- Henry Washbourn 1
- Henry Young & Sons 1
- Her Majesty's Stationery Office 19
- Herald Gravure 1
- Herald Printers (whitchurch) Ltd 1
- Herb Harris 1
- Herbert & Daniel 1
- Herbert Jenkins 8
- Herbert Jenkins Limited 6
- Herbert Jenkins Ltd. 3
- Herbert Joseph 1
- Herbert Joseph Limited 3
- Herbig 1
- Herder & Co. 1
- Hereford City Council 1
- Heritage House Publishing Company Ltd. 1
- Heritage Press (scotland) 1
- Hermann 1
- Hermann & Cie. 1
- Hermann Schafftein 1
- Hermes House 1
- Herridge & Sons 1
- Hertfordshire Natural History Society 1
- Hickory House Press 1
- Hicks Smith & Sons Limited 1
- High Museum Of Art, Atlanta 1
- Highgate Publications Ltd 1
- Hikoki Publications 7
- Hildesheimer & Faulkner 9
- Hillhead Publications 1
- Hillside Publishing 1
- Hippocrene Books 1
- His Majesty's Stationery Office 3
- Hisarlik Press 1
- Histoire & Collections 5
- Historic Buildings & Monuments Commission For England 1
- Historic England 1
- Historica Selecta 2
- Historical Aviation Album 2
- Historical Model Railway Society 1
- Historical Publications Ltd. 5
- History And Museums Divisions 1
- Hitchin Urban District Council 2
- HMSO 33
- Hodder & Stoughton 380
- Hodder & Stoughton Children's Books 3
- Hodder Children's Books 21
- Holiday House, New York 2
- Holland Studio Craft Ltd. 4
- Hollis & Carter 15
- Holt Rinehart & Winston 1
- Holywell Press 3
- Home Words Publishing Office 1
- Homewood Publishing Company 1
- Honda (u.K.) Ltd. 1
- Honey Dun Press 1
- Hong Kong Museum Of Art 1
- Hong Kong University Press 1
- Honno 1
- Hood & Co. Limited 1
- Horizons De France 1
- Houghton Mifflin and Company 2
- Houghton Mifflin Company 6
- Houghton Mifflin Company Boston 1
- Houghton Mifflin Harcourt 1
- Houghton, Osgood And Company 1
- Houlston & Sons 2
- Houlston and Stoneman 1
- Howard Baker 100
- Howard Baker Press 75
- Howell Press 1
- Howland Associates 1
- HSW Print 2