Publishers
- Howard Frisch 1
- Howell Press 1
- Howland Associates 1
- HSW Print 1
- Hudson & Kearns 1
- Hudson Hills Press 2
- Hudson History 1
- Hugh Broadbent 1
- Hugh Evans 6
- Hugh Evelyn 3
- Hugh Henry 1
- Hughes & Son 4
- Hughes A'I Fab 4
- Hughes and Son Ltd. 3
- Hughes Griffin Press 2
- Hull City Museums 2
- Hull Museum 1
- Hulton Press 3
- Hulton Press Ltd. 9
- Humana Press 1
- Humber Paddle Steamer Group 1
- Humboldt Books 1
- Humphrey Milford 170
- Humphrey Toulmin 1
- Hungarian Technical Publishers 1
- Hunkydory Designs 2
- Hunter College Of The City University Of New York 1
- Hurst 1
- Hurst & Blackett 2
- Hurst & Blackett Ltd. 2
- Hurst & Co 1
- Hurtwood Press 1
- Hutchinson 25
- Hutchinson & Co. 10
- Hutchinson & Co. Ltd 26
- Hutchinson Australia 1
- Hutchinson Children's Books 2
- Hutchinson Education 1
- Hutchinson Junior Books 2
- Hutchinson Junior Books Ltd 1
- Hutchinson of London 7
- Hutchinson's Books for Young People 9
- Hutchinson's Scientific And Technical Publications 1
- Hyde Park Books Ltd 1
- Hyde Park Group Plc 1
- Hyperion 1
- Hythe Borough Council 1