Publishers
- N. & S. Press 1
- N.J. International 2
- Nadas 1
- Nai Publishers 2
- Nand Kishore & Bros 1
- Narkiewicz Thompson 4
- Narrow Gauge Railway Society 1
- National Academy Of Sciences 1
- National Academy Press 2
- National Army Museum 1
- National Book Trust 1
- National Botanic Gardens 1
- National Galleries Of Scotland 2
- National Gallery 3
- National Gallery Company Limited 2
- National Gallery Of Victoria 2
- National Gallery Publications Limited 3
- National Gallery Singapore 1
- National Geographic Society 10
- National Geographical Society Of India 1
- National Institute Of Environmental Health Sciences 1
- National Library Of Australia 1
- National Library Of Ireland 1
- National Maritime Museum 2
- National Museum Of Canada 1
- National Museum of Wales 11
- National Museums Northern Ireland 1
- National Museums Of Scotland Publishing Limited 1
- National Organizing Committee 1
- National Portrait Gallery 2
- National Radiological Protection Board 1
- National Society's Depository 4
- Natural History Museum 1
- Natural History Publications (borneo) 2
- Nature Conservancy Council 1
- Nature In Art Trust 1
- Nautical Association Of Australia Inc. 2
- Nautical Publishing Company 1
- Naval Historical Center 1
- Naval Institute Press 13
- Navigator Publishing Ltd. 1
- Neath Antiquarian Society 2
- Nebulous Books 1
- Negretti & Zambra 1
- Neil Richardson 1
- Nelson 8
- Nelson & Phillips 1
- Nemo Productions 1
- Nestle And Anglo-Swiss Condensed Milk Co. 1
- Network Books 1
- Neville Spearman 1
- New Cavendish Books 2
- New English Library 4
- New Enterprise Publications 1
- New Era Publications 2
- New Holland 7
- New Holland Publishers (uk) Ltd 4
- New South Wales University Press 1
- New York Graphic Society Publishers 2
- New York University Press 2
- Newlands Press 1
- Newman Press 1
- Newnes 14
- Newnes Books 1
- Newport & Monmouthshire Historical Association 3
- Newport Corporation 3
- Newport County Borough Council 1
- Newport Golf Club 2
- Newport Public Libraries Committee 1
- News Chronicle 10
- News Chronicle Ltd. 1
- News Chronicle Publications 7
- Newton 1
- Nicholas Kaye 3
- Nicholas Vane 1
- Nichols And Sons 1
- Nicholson & Watson 5
- Nick McCann Associates Ltd 3
- Nickerson & Collins 1
- Nihon Keizei Shimbun 1
- Nimrod Book Services 1
- Nisbet & Co. Ltd. 20
- Nister 1
- NISTER & CO. 1
- Nister & Co. Ltd. 3
- Niton Publishing 4
- NO NAME 1
- Noel Carrington 2
- Noel Douglas 1
- Norfolk & Norwich Naturalists' Society 1
- Norman Adlard & Co. Ltd. 1
- Norman Wright 10
- North Atlantic Books 1
- North Holland Publishing Company 1
- North Kent Books 1
- North South Books 6
- North-East Scotland Bird Club 2
- North-Holland Publishing Company 3
- North-South Books 2
- Northamptonshire Libraries 1