A
| Publisher | Website | ISBN prefix |
| 2.13.61 | www.21361.com | 1-880985 |
| 4N Publishing LLC | www.4npublishing.com | 0-9741319, 0-9798841 |
| 826 Books | www.826valencia.org | 0-9770844, 0-979007 |
| Abbeville Press | www.abbeville.com | 0-7892, 0-89660, 1-55859 |
| ACP Books | www.australian-womens-weekly.com | 1-86396 |
| Agate Publishing | www.agatepublishing.com | 1-932841, 0-9724562 |
| AK Press
AntiThesis Nabat Books |
www.akpress.org | 0-972742, 1-873176, 1-902593, 1-904859
1-902593 1-902593 |
| Akashic Books
The Armory RDV Books |
www.akashicbooks.com | 0-9787794, 0-9789103, 1-888451, 1-933354
1-933354 0-9719206, 1-933354 |
| Alice James Books | www.alicejamesbooks.org | 0-914086, 1-882295 |
| Alliance Publishing Group | www.alliancepublishing.com | 0-9787851, 0-9755995 |
| Alyson Publications
Advocate Books |
www.alyson.com | 0-917597, 0-932870, 1-55583, 1-59350
1-55583 |
| AM Editores | www.ameditores/english/startup.htm | 607-437, 968-5336, 970-828, 970-9726 |
| Amber-Allen Publishing | www.amberallen.com | 1-878424, 1-880032 |
| Amorata Press | 1-56975 | |
| Anvil Press | www.anvilpress.com | 0-85646, 0-900977 |
| Archipelago Books | www.archipelagobooks.org | 0-97286, 0-9749680, 0-9763950, 0-9778576, 0-9793330, 0-9800330 |
| Architecture Interiors Press | www.architectureinteriorspress.com | 0-9823190 |
| ArtNetwork | www.artmarketing.com | 0-940899 |
| ASDavis Media Group, Greenline Publications, Pulse Guides | www.greenlinepub.com | 0-9666352, 0-9759022, 0-9766013, 0-9787719, 0-9759022, 0-9766013, 0-9776245, 1-934724 |
| Atlantic Books | www.atlantic-books.co.uk | 1-84354 |
| Augustus Publishing, Caswell Communications | www.augustuspublishing.com | 0-9759453, 0-9792816, 0-9820653 |
| Aunt Lute Books | www.auntlute.com | 0-933216, 1-879960 |
| Avalon Travel Publishing | www.travelmatters.com | 1-56261, 1-56691, 1-57354 |
B
| Publisher | Website | ISBN prefix |
| BBC Audiobooks America | www.bbcaudiobooks.com | 1-60283 |
| Basic Books, Basic Civitas, Westview | www.perseusbooksgroup.com/basic | 0-201, 0-465, 0-7382, 0-465, 0-06430, 0-8133, 0-86531 |
| Beast Books | 0-9842951 | |
| Bella Books, Bold Strokes Books, Spinsters Ink, Beanpole | www.bellabooks.com | 1-883523, 1-59493, 1-60282, 1-933110 |
| Bellevue Literary Press | www.blpbooks.org | 1-934137 |
| Benjamin Brown Books | www.benjaminbrownbooks.com | 0-9782553 |
| Ben Bella Books | www.benbellabooks.com | 1-932100, 1-933771 |
| Beverly Clark Collection | www.beverlyclark.com | 0-934081 |
| Bitter Lemon Press | www.bitterlemonpress.com | 1-904738 |
| Black Classic Press | www.blackclassicbooks.com/servlet/StoreFront | 0-933121, 1-57478, 1-58073 |
| Blast Books | www.blastbooks.com | 0-922233 |
| Bondi Digital Publishing LLC | www.bondidigital.com | 0-9795261 |
| Boyds Mills Press, Front Street, Front Street/Lemniscat, Wordsong | www.boydsmillspress.com | 0-87534, 1-56397, 1-878093, 1-59078, 0-9670427, 0-9614228, 1-887746, 1-932425, 1-886910 |
| Breakaway Books | www.breakawaybooks.com | 1-55821, 1-891369 |
| Busted Flush Press, LLC | www.bustedflushpress.com | 1-935415, 0-9767157, 0-9792709 |
| Bywater Books, Bloody Brits Press | www.bywaterbooks.com | 1-932859, 1-932859 |