 The Experiment USA | 1 | 2017 |
 The Factory Australia | 2 | 2007 - 2009 |
 The Festiniog Railway Company UK | 1 | |
| The Fleming-Wyfold Art Foundation UK | 1 | 2008 |
| The Folio Society UK | 7 | 1968 - 2015 |
| The Foulis Press UK | 1 | 1995 |
| The Frances Frith Collection / Selectabooks Ltd. UK | 1 | 1996 |
| The Franklin Library USA | 1 | 1975 |
| The Friday Project UK | 9 | 2009 - 2014 |
 The Geological Survey Of Canada Canada | 1 | 1963 |
| The Glasgow School Of Art UK | 1 | 1961 |
| The Globe Pequot Press USA | 2 | 2002 - 2003 |
| The Goody Press USA | 1 | 2024 |
| The Gramophone Co., Ltd Education Department UK | 1 | 1921 |
| The Graphis Press International | 2 | 1969 - 1974 |
| The Grass Is Green In The Fields For You UK | 1 | 2019 |
| The Grimsay Press UK | 1 | 2006 |
| The Guardian UK | 1 | 2008 |
| The Gurkha Museum UK | 1 | 2006 |
| The Hallamshire Press UK | 3 | 1997 - 1999 |
| The Hambledon Press UK | 1 | 1984 |
| The Hamlyn Publishing Group Ltd. UK | 5 | 1968 - 1970 |
| The Harborough Publishing Co. Ltd. UK | 1 | 1959 |
| The Harvill Press UK | 7 | 1991 - 2004 |
| The Heritage Workshop Centre UK | 1 | 2003 |
| The Hieratic Publishing Co. USA | 3 | 1978 - 1982 |
| The Historic New Orleans Collection USA | 2 | 2010 - 2012 |
| The History Company USA | 1 | 1890 |
| The History Press USA | 2 | 2013 - 2015 |
| The History Press UK | 19 | 2005 - 2025 |
| The Hogarth Press UK | 3 | 1984 - 1986 |
| The Hogarth Press / Chatto & Windus UK | 1 | 1985 |
| The Holy Spirit Association USA | 1 | 1972 |
| The Homeland Association Ltd UK | 1 | |
 The House Of Books Netherlands | 2 | 2005 - 2006 |
| The House Of Collectibles USA | 1 | 1988 |
| The House Of Collectibles Inc. USA | 1 | 1983 |
| The House Of Seagram Canada | 1 | 1953 |
| The Illustrated London News UK | 1 | 1994 |
| The Institute Of Applied Art Ltd. Canada | 1 | 1958 |
| The Interstate Company USA | 1 | 1927 |
| The Invisible Dot UK | 1 | 2010 |
 The Ishi Press Japan | 1 | 1975 |
| The Island Trading Company Ltd UK | 1 | 2009 |
| The Japan Times Japan | 1 | 1996 |
| The John C. Winston Co. USA | 4 | 1923 - 1941 |
| The John Edwards Memorial Forum USA | 1 | 1984 |
| The John Hopkins University Press USA | 1 | 1997 |
| The Kitchen Center For Video, Music, Dance, Performance, Film And Literature USA | 1 | 1992 |
| The Larry Czerwonka Company USA | 2 | 2017 |
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| The Library Of America USA | 2 | 2003 - 2015 |
| The Little Brown House USA | 1 | 1977 |
| The Locomotive Publishing Company UK | 1 | 1899 |
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 The Lough Press Germany | 1 | 1985 |
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| The Lyons Press USA | 2 | 1998 - 2007 |
| The M.I.T.Press USA | 1 | 1990 |
| The Macmillan Company USA | 12 | 1923 - 1972 |
| The Macmillan Press Ltd. UK | 1 | 1987 |
| The MacMillan Way Association UK | 1 | 1997 |
| The Manx Experience UK | 4 | 1991 - 2002 |
| The Message Company USA | 1 | |
| The Metropolitan Museum Of Art USA | 1 | 1980 |
| The MIT Press USA | 2 | 2001 - 2018 |
| The Moray Press UK | 1 | 1943 |
| The Museum Of Modern Art USA | 12 | 1942 - 2015 |
| The National Rock ’N Roll Archive USA | 2 | 1986 - 1987 |
| The National Trust UK | 2 | 1994 - 1996 |
| The Naylor Company USA | 1 | 1976 |
| The Nesfa Press USA | 1 | 1995 |
| The New American Library USA | 6 | 1957 - 1967 |
| The New American Library Of Canada Canada | 1 | 1978 |
| The New Press USA | 2 | 1993 - 2006 |
| The Newcomen Society Of North America USA | 2 | 1950 - 1975 |
| The Nonesuch Library UK | 1 | 1939 |
| The Nonesuch Press UK | 1 | 2005 |
| The Northern Echo UK | 2 | 1995 - 2001 |
| The Northwestern Pacific Railroad Historical Society, Inc. USA | 1 | 2019 |
| The O'Brien Press UK | 1 | 2011 |
| The Oakwood Press UK | 18 | 1955 - 1982 |
 The Oberoi Group India | 2 | |
| The Observer UK | 1 | 2008 |
| The Office Of 'The Girl's Own Paper' UK | 1 | |
| The Office Of Public Works (OPW) UK | 1 | 2006 |
| The Official Chart Company UK | 1 | 2018 |
 The Official Elvis Presley Fan Club Of Finland Finland | 1 | 2017 |
| The Old Comrades' Association 15th(I.o.M.) L.A.A. Regt, R.A. UK | 1 | 1981 |
| The Olympia Press USA | 1 | 1971 |
| The Olympia Press UK | 1 | 1972 |
| The Overlook Press USA | 7 | 1974 - 2006 |
| The Parish Church Of Saint & All Angels UK | 1 | 2018 |
| The Parlophone Company Ltd. UK | 1 | 1948 |
| The Parrs Wood Press UK | 1 | 2002 |
| The Paternoster Press UK | 1 | 1961 |
| The Penguin Press USA | 4 | 2006 - 2014 |
| The Pennsylvania State University Press USA | 1 | 1990 |
| The Pentaradial Press USA | 1 | 1997 |
| The People's History Ltd. UK | 1 | 2002 |
| The Peppertree Press USA | 2 | 2009 - 2010 |
| The Permanent Press USA | 1 | 1994 |
| The Pet Book Publishing Company UK | 1 | 2010 |
| The Peter Pauper Press USA | 1 | 1936 |
| The Pipesmokers' Council UK | 1 | 1983 |
 The Pipin Press Singapore | 1 | 2005 |
| The Press Of Case Western Reserve University USA | 1 | 1972 |
| The Print Shoppe USA | 1 | 1990 |
| The Priory Of Canada/Le Prieuré Du Canada Canada | 1 | 1950 |
| The Promotions Company UK | 1 | 1990 |
| The Public Record Office And The British Library UK | 1 | 1993 |
| The Purbeck Press UK | 2 | 1974 |
| The Quantuck Lane Press USA | 1 | 2015 |
| The Railway Publishing Co, Ltd. UK | 1 | 1921 |
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| The Ramblers' Association UK | 1 | 2008 |
| The Random House Group Ltd. UK | 1 | 2003 |
| The Record Press UK | 1 | 2015 |
 The Record Press Europe | 1 | 2010 |
| The Record Undertaker USA | 1 | 1970 |
| The Reilly & Lee Co. USA | 3 | 1923 - 1965 |
| The Religious Tract Society UK | 2 | 1888 |
| The Reprint Society UK | 6 | 1948 - 1966 |
| The Richards Press UK | 1 | 1940 |
| The Richards Press Ltd And The Daily Herald UK | 1 | 1914 |
| The Ridge Press International | 1 | 1975 |
| The Road Rat UK | 1 | 2019 |
| The Robson Press UK | 3 | 2012 - 2015 |
| The Roundhead Association UK | 1 | 1989 |
| The Royal Automobile Club UK | 1 | 1979 |
| The Rutledge Press USA | 1 | |
| The Ryedale Folk Museum UK | 1 | 1968 |
| The Ryerson Press Canada | 2 | 1914 - 1961 |
| The Saalfield Publishing Co. USA | 1 | 1909 |
| The Scarecrow Press USA | 7 | 1973 - 1988 |
| The Scarecrow Press, Inc. USA | 1 | 1983 |
| The Science Fiction Book Club UK | 36 | 1953 - 1970 |
| The Science Fiction Book Club / Readers Union UK | 36 | 1964 - 1982 |
| The Seabury Press USA | 2 | 1972 - 1979 |
| The Shakespeare Head Press UK | 1 | 1983 |
| The Sheridan Book Company UK | 2 | 1993 - 1994 |
| The Shetland Times Ltd. UK | 1 | 2010 |
| The Society For Lincolnshire History & Archaeology UK | 1 | 1988 |
| The Society Of Motor Manufacturers & Traders UK | 1 | 1946 |
| The Sourcebook Project USA | 22 | 1982 - 2005 |
| The Southern Pacific Public Relations Department USA | 1 | 1967 |
| The Southern Rhodesian Artillery Association Rhodesia | 1 | 1947 |
| The Sportsmans Book Club UK | 3 | 1962 - 1968 |
| The St. John Ambulance Canada | 1 | 1959 |
| The St. John Ambulance Association UK | 2 | 1939 - 1942 |
| The Stanford Theatre Foundation USA | 1 | 1990 |
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 The State Library - Die Staatsbiblioteek South Africa | 1 | 1970 |
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| The Strasburg Rail Road Shop, Inc. USA | 1 | 1983 |
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| The Studio UK | 3 | 1925 - 1949 |
| The Sun UK | 5 | 1971 - 1979 |
| The Sunday Times UK | 1 | 1962 |
| The Tank Museum UK | 1 | 2021 |
| The Tantivy Press UK | 2 | 1975 - 1976 |
| The Taylor And Lockley Company UK | 1 | 1989 |
| The Text Publishing Company Australia | 2 | 1996 - 2008 |
| The Thames Publishing Co. UK | 1 | 1953 |
| The Theosophical Publishing House UK | 1 | 1972 |
| The Toby Press USA | 1 | 2015 |
| The Travel Association UK | 1 | 1949 |
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| The University Of Wisconsin Press USA | 1 | 1967 |
| The University Press Of Hawaii USA | 1 | 1979 |
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| The Viking Press USA | 5 | 1968 - 1981 |
| The Visionary Company Press USA | 1 | 2009 |
| The Weardale Museum UK | 1 | 2004 |
| The Wellfleet Press USA | 1 | 1988 |
| The Western Publicity Co. Canada | 1 | |
| The Who.Com UK | 1 | 2014 |
| The Willis Music Company International | 1 | 1995 |
| The Windrush Press UK | 3 | 1993 - 1998 |
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| The Women's Press UK | 11 | 1979 - 1989 |
| The World Publishing Company USA | 3 | 1944 - 1946 |
| The X Press UK | 1 | 2004 |
| The Yorkshire Branch Of The Richard III Society UK | 1 | 1974 |
| Theatre Communications Group USA | 4 | 1987 - 2017 |
 Théâtre National Populaire France | 1 | 1967 |
| Theatrum Orbis Terrarum B.V. Netherlands | 1 | 1980 |
| Theia Books USA | 2 | 2001 - 2002 |
| Theodor Oppermann Verlag, Hannover Germany | 2 | 1953 - 1955 |
| Theosophical Publishing House India | 1 | 1967 |
| Theosophical Publishing House USA | 1 | 1972 |
| Theseus Germany | 1 | 2007 |
| Thiele Verlag Germany | 2 | 2013 - 2020 |
| Thieme Germany | 1 | 2003 |