| Republican People's Party of Turkey (CHP) | Active | 1 | 1 | May 6, 2013 | 62 | January 26, 2021 |
| Government of the Republic of Turkey, Embassy | Active | 1 | 7 | August 13, 1998 | 30 | June 2, 2026 |
| GOTURKIYE - Turkish Ministry of Culture & Tourism | Active | 1 | 1 | September 27, 2022 | 27 | September 10, 2026 |
| Embassy of Turkey | Active | 1 | 8 | May 9, 1972 | 17 | May 27, 2025 |
| Turkiye Radyo Televizyon Kurumu | Active | 1 | 1 | March 12, 2020 | 14 | May 4, 2022 |
| Government of the Republic of Turkey | Active | 1 | 7 | February 28, 1963 | 12 | July 11, 2026 |
| LB International Solutions, LLC (on behalf of the Turkish Republic of Northern Cyprus - DC office and Govt. of the Republic of Turkey, Embassy) | Active | 1 | 1 | May 15, 2024 | 12 | June 24, 2026 |
| Justice and Development Party of Turkey (AK Party) | Active | 1 | 1 | May 11, 2022 | 10 | May 21, 2023 |
| Ensar Vakfi | Active | 1 | 1 | May 18, 2022 | 5 | June 30, 2026 |
| Turkish Youth and Education Service Foundation (TURGEV) | Active | 1 | 1 | May 18, 2022 | 5 | June 30, 2026 |
| The Ministry of Environment, Urbanization and Climate Change of the Republic of Türkiye through Emlak Planlama Insaat Proje Yönetimi Ve Ticaret A.S. | Active | 1 | 1 | July 16, 2026 | 2 | August 30, 2026 |
| Bilal Bilici | Active | 1 | 1 | April 11, 2024 | 1 | April 11, 2024 |
| Desan Shipyard | Active | 1 | 1 | August 31, 2026 | 1 | August 31, 2026 |
| IYI Party (Good Party) | Active | 1 | 1 | January 3, 2025 | 1 | January 3, 2025 |
| ONJA MALi VE Y ATIRIM DANISMANLIGI EGiTiM i<; VE DIS TiCARET ANONiM SiRKETi (ONJA) | Active | 1 | 1 | January 23, 2026 | 1 | January 23, 2026 |
| ONJA Mall ve Yatirim Danismanligi Egitim Ic ve Dis Ticaret Anonim sirketi (ONJA) | Active | 1 | 1 | January 26, 2026 | 1 | January 26, 2026 |
| Republic of Türkiye Ministry of National Defense | Active | 1 | 1 | August 21, 2026 | 1 | August 21, 2026 |
| Government of Turkiye (through LB international Solutions) | Active | 1 | 1 | March 23, 2025 | 0 | |
| Turkey-U.S. Business Council (TAIK) | Ended | 0 | 1 | February 22, 2018 | 212 | October 15, 2021 |
| Embassy of the Republic of Turkey | Ended | 0 | 9 | August 8, 1980 | 65 | September 29, 2020 |
| Republic of Turkey | Ended | 0 | 17 | September 8, 1955 | 54 | May 15, 2025 |
| Republic of Turkey, Embassy | Ended | 0 | 10 | October 6, 1997 | 44 | April 30, 2018 |
| Republic of Turkey through Greenberg Traurig LLP | Ended | 0 | 1 | January 1, 2017 | 13 | December 21, 2020 |
| Republic of Turkey through Amsterdam & Partners, LLP | Ended | 0 | 6 | June 3, 2016 | 12 | May 31, 2018 |
| Greenberg Traurig, LLP on behalf of the Republic of Turkey | Ended | 0 | 1 | January 19, 2019 | 6 | May 4, 2020 |
| Embassy of Republic of Turkey through Amsterdam & Partners, LLP | Ended | 0 | 2 | March 16, 2016 | 5 | February 4, 2019 |
| Government of Turkey | Ended | 0 | 7 | September 8, 1955 | 5 | April 9, 2009 |
| Government of Turkey, Embassy | Ended | 0 | 6 | June 9, 1994 | 5 | November 18, 2010 |
| Republic of Turkey through Greenberg Traurig | Ended | 0 | 1 | January 18, 2017 | 5 | February 23, 2018 |
| Embassy of the Republic of Turkey (through Fleishman-Hillard) | Ended | 0 | 2 | October 9, 2008 | 4 | January 7, 2010 |
| Republic of Turkey on behalf of Amsterdam & Partners, LLP | Ended | 0 | 1 | September 29, 2017 | 4 | April 27, 2018 |
| Office of the Prime Minister, Republic of Turkey | Ended | 0 | 1 | December 1, 1994 | 3 | February 12, 1997 |
| Republic of Turkey (through Gephardt Group Government Affairs LLC) | Ended | 0 | 1 | November 19, 2015 | 3 | June 3, 2019 |
| Republic of Turkey (through the Gephardt Group) | Ended | 0 | 1 | April 1, 2009 | 3 | July 31, 2009 |
| Republic of Turkey through Gephardt Group | Ended | 0 | 1 | | 3 | March 16, 2017 |
| B.D.P ( Peace Democracy Party) in Turkey | Ended | 0 | 1 | October 3, 2012 | 2 | April 30, 2017 |
| Central Bank of the Republic of Turkey | Ended | 0 | 2 | November 9, 1978 | 2 | October 29, 1999 |
| Embassy of the Republic of Turkey (through the Harbour Group, LLC) | Ended | 0 | 1 | | 2 | April 28, 2005 |
| GCI Group for the Quincentennial Foundation of Istanbul | Ended | 0 | 1 | March 27, 1992 | 2 | July 23, 1992 |
| Government of Turkiye | Ended | 0 | 1 | | 2 | September 19, 2025 |
| IYI Party Representation to the United States LLC | Ended | 0 | 1 | January 30, 2023 | 2 | August 29, 2023 |
| Ministry of Culture & Tourism | Ended | 0 | 1 | October 22, 1947 | 2 | October 1, 1973 |
| Ministry of Culture and Tourism of Turkey | Ended | 0 | 1 | October 26, 2017 | 2 | October 24, 2018 |
| Mustafa Cankat Aytek | Ended | 0 | 1 | November 25, 2025 | 2 | May 8, 2026 |
| People's Democracy Party (HDP) | Ended | 0 | 1 | September 9, 2017 | 2 | October 31, 2019 |
| Presidency of Turkish Defense Industries (SSB) Savunma Sanayi Teknolojileri AS (SSTEK) | Ended | 0 | 1 | March 21, 2021 | 2 | September 21, 2021 |
| Profilo Holding, A.S. | Ended | 0 | 3 | December 16, 1985 | 2 | September 3, 1991 |
| Quincentennial Foundation of Istanbul | Ended | 0 | 2 | February 12, 1990 | 2 | September 19, 1991 |
| Republic of Turkey (Previously Embassy of Turkey) | Ended | 0 | 1 | October 12, 1993 | 2 | October 12, 1993 |
| Republic of Turkiye | Ended | 0 | 1 | December 22, 2022 | 2 | July 18, 2023 |
| SSTEK Savunma Sanayi Teknolojileri AS (SSTEK) | Ended | 0 | 1 | February 16, 2021 | 2 | September 20, 2021 |
| Turkcell | Ended | 0 | 1 | July 17, 2024 | 2 | March 7, 2025 |
| Turkish Aerospace Industries (through Greenberg Traurig LLP) | Ended | 0 | 1 | July 24, 2020 | 2 | December 14, 2020 |
| Turkish Apparel Exporters' Association | Ended | 0 | 1 | January 31, 1990 | 2 | August 17, 1990 |
| Turkish Culture and Tourist Office | Ended | 0 | 2 | March 19, 2013 | 2 | March 10, 2014 |
| Turkish Ministry of Tourism | Ended | 0 | 1 | June 8, 1992 | 2 | September 1, 1993 |
| Turkish Tourism & Information Office | Ended | 0 | 3 | May 10, 1973 | 2 | May 1, 1983 |
| Turkiye Halk Bankasi Anonim Sirketi (Halkbank, Inc.) | Ended | 0 | 1 | August 28, 2017 | 2 | July 30, 2019 |
| Undersecretariat for Defense Industry (SSM) Turkish Ministry of National Defense | Ended | 0 | 2 | December 12, 2012 | 2 | June 29, 2017 |
| lYI Party (Good Party) | Ended | 0 | 1 | December 19, 2022 | 2 | July 31, 2023 |
| (TUSIAD) TURKISH INDUSTRIALISTS' & BUSINESSMAN'S ASSOCIATION | Ended | 0 | 1 | | 1 | November 13, 1998 |
| Ak-Pa Tekstil Ihracat Pazarlama, A.S. | Ended | 0 | 1 | February 21, 1985 | 1 | February 21, 1985 |
| Ali Arslan, MP | Ended | 0 | 1 | October 7, 2020 | 1 | October 7, 2020 |
| American-Turkish Council (ATC) | Ended | 0 | 1 | April 3, 2019 | 1 | April 3, 2019 |
| Amsterdam & Partners, LLP on behalf of the Embassy of the Republic of Turkey | Ended | 0 | 1 | March 29, 2016 | 1 | March 29, 2016 |
| Arsay Media | Ended | 0 | 1 | March 16, 2017 | 1 | March 16, 2017 |
| BDP (Peace and Democracy Party) | Ended | 0 | 2 | January 14, 2010 | 1 | January 14, 2010 |
| Besim Tibuk | Ended | 0 | 1 | July 29, 1997 | 1 | July 29, 1997 |
| Borusan Mannesmann | Ended | 0 | 1 | May 19, 2014 | 1 | May 19, 2014 |
| Central Bank of Turkey | Ended | 0 | 1 | August 26, 1997 | 1 | August 26, 1997 |
| DTP (Democratic Society Party) | Ended | 0 | 1 | October 7, 2009 | 1 | October 7, 2009 |
| Embassy of Republic of Turkey thru Gephardt Group Government Affairs | Ended | 0 | 1 | June 14, 2016 | 1 | June 14, 2016 |
| Embassy of Turkiye | Ended | 0 | 1 | | 1 | April 18, 2023 |
| Embassy of the Republic of Turkey (through IsraelConsult Inc.) | Ended | 0 | 1 | April 18, 2005 | 1 | April 18, 2005 |
| Embassy of the Republic of Turkey through Amsterdam & Partners, LLP | Ended | 0 | 1 | March 28, 2016 | 1 | December 18, 2017 |
| Embassy of the Republic of Turkey through DiNovo Strategies and Fleishman-Hillard | Ended | 0 | 1 | September 30, 2008 | 1 | September 30, 2008 |
| Embassy of the Turkish Republic | Ended | 0 | 2 | January 7, 1981 | 1 | July 1, 1988 |
| Genc Parti Genel Merkezy | Ended | 0 | 1 | March 7, 2006 | 1 | March 7, 2006 |
| Genc Siviller Associaton | Ended | 0 | 1 | September 30, 2014 | 1 | September 30, 2014 |
| Government of Turkey (through the Gephardt Group) | Ended | 0 | 1 | August 10, 2015 | 1 | August 10, 2015 |
| Government of Turkey, Embassy through DLA Piper, LLP | Ended | 0 | 1 | March 27, 2009 | 1 | March 27, 2009 |
| Government of the Republic of Turkey through Gephardt Group Government Affairs, LLC | Ended | 0 | 1 | | 1 | January 9, 2012 |
| Government of the Republic of Turkey, Embassy through Gephardt Group Government Affairs, LLC | Ended | 0 | 1 | January 9, 2012 | 1 | March 1, 2016 |
| Inovo BV | Ended | 0 | 1 | March 7, 2017 | 1 | March 7, 2017 |
| Inovo BV through Flynn Intel Group, Inc. | Ended | 0 | 1 | March 7, 2017 | 1 | March 7, 2017 |
| Interbank (Uluslararasi Endustri ve Ticaret Bankasi) | Ended | 0 | 1 | February 27, 1991 | 1 | February 1, 1991 |
| Interbank Anonim Sirketi | Ended | 0 | 1 | January 5, 1994 | 1 | January 1, 1994 |
| Istanbul Iron and Steel Exporters Association | Ended | 0 | 1 | May 24, 2010 | 1 | May 24, 2010 |
| Justice and Development Party of Turkiye (AK Party) | Ended | 0 | 1 | August 27, 2024 | 1 | August 27, 2024 |
| Knowledge Economy Association of Turkey | Ended | 0 | 1 | August 11, 2016 | 1 | August 11, 2016 |
| MINISTER OF STATE FOR THE ECONOMY, REPUBLIC OF TURKEY | Ended | 0 | 1 | | 1 | June 1, 1992 |
| Milliyetci Hareket Partisi (MHP) | Ended | 0 | 1 | April 13, 1993 | 1 | April 1, 1993 |
| Ministry of Foreign Affairs, Government of Turkey | Ended | 0 | 1 | December 21, 2017 | 1 | December 21, 2017 |
| Ministry of Tourism of Republic of Turkey | Ended | 0 | 1 | August 6, 1991 | 1 | August 6, 1991 |
| Motherland Party of Turkey (Anavatan Partisi Genel Merkezi) | Ended | 0 | 1 | March 14, 1995 | 1 | March 14, 1995 |
| Mouhammad Zaher Badaraany | Ended | 0 | 1 | November 13, 2012 | 1 | November 13, 2012 |
| OFFICE OF PRIME MINISTER, REPUBLIC OF TURKEY | Ended | 0 | 1 | | 1 | February 13, 1995 |
| OFFICE OF THE PRIME MINISTER MESUT YILMAZ, REPUBLIC OF TURKE | Ended | 0 | 1 | | 1 | December 29, 1997 |
| Osman Dogangun, Deputy Undersecretary for Foreign Trade | Ended | 0 | 1 | October 20, 1993 | 1 | October 1, 1993 |
| PENAJANS/DMB & B TICARET, A.S. | Ended | 0 | 1 | | 1 | May 1, 1993 |
| PRIME MINISTRY, UNDERSECRETARIAT FOR TREASURY & FOREIGN | Ended | 0 | 1 | | 1 | April 1, 1991 |
| Peace and Democracy Party (BDP) in Turkey | Ended | 0 | 1 | August 6, 2012 | 1 | August 6, 2012 |
| Presidency of the Republic of Haiti (through Mercury International UK Ltd) | Ended | 0 | 1 | | 1 | March 12, 2021 |
| Quincentennial Foundation of Instanbul | Ended | 0 | 1 | | 1 | June 27, 1990 |
| REPUBLIC OF TURKEY (PRIME MINISTER MESUT YILMAZ) | Ended | 0 | 1 | | 1 | January 15, 1998 |
| Repubilc of Turkey (through Royal Atlantic LLC) | Ended | 0 | 1 | June 5, 2015 | 1 | June 5, 2015 |
| Republic of Turkey, Embassy, through the Livingston Group, LLC | Ended | 0 | 1 | January 31, 2000 | 1 | June 1, 2007 |
| TURKISH FOREIN ECONOMIC RELATIONS BOARD (DEIK) | Ended | 0 | 1 | | 1 | April 13, 1998 |
| Teknolojileri Muhendislik ve Ticaret, AS (STM) | Ended | 0 | 1 | July 22, 2010 | 1 | July 22, 2010 |
| Turk Hava Yollari, A.O. (Turkish Airlines) | Ended | 0 | 1 | May 21, 2015 | 1 | May 21, 2015 |
| Turkey-U.S. Business Council (TAIK) (through Mercury Public Affairs, LLC) | Ended | 0 | 1 | July 17, 2018 | 1 | July 17, 2018 |
| Turkey-US Business Council (TAIK) | Ended | 0 | 1 | October 5, 2022 | 1 | October 5, 2022 |
| Turkish Aerospace | Ended | 0 | 1 | July 24, 2020 | 1 | July 24, 2020 |
| Turkish Airlines, Inc. | Ended | 0 | 1 | August 21, 1975 | 1 | August 21, 1975 |
| Turkish Culture & Tourist Office, New York | Ended | 0 | 1 | | 1 | November 10, 2010 |
| Turkish Exporters Assembly Turkey Promotion Group | Ended | 0 | 1 | October 30, 2019 | 1 | October 30, 2019 |
| Turkish Exporters' Assembly (TiM) | Ended | 0 | 1 | January 3, 2018 | 1 | January 3, 2018 |
| Turkish Foreign Economic Relations Board (DEIK) | Ended | 0 | 2 | March 4, 1998 | 1 | March 4, 1998 |
| Turkish Ministry of Foreign Affairs through Hill & Knowlton Dubai | Ended | 0 | 1 | May 12, 2011 | 1 | May 12, 2011 |
| Turkish Ministry of Tourism & Information | Ended | 0 | 1 | June 4, 1991 | 1 | June 1, 1991 |
| Turkish Mission to the United Nations | Ended | 0 | 1 | March 10, 2003 | 1 | March 10, 2003 |
| Turkish Republic of Northern Cyprus (TRNC) Washington DC Office | Ended | 0 | 1 | January 23, 2023 | 1 | January 23, 2023 |
| Turkish Tourism Information Office | Ended | 0 | 1 | January 8, 1991 | 1 | January 8, 1991 |
| Undersecretariat for Defense Industry (SSM) Turkish Ministry of Natinal Defense) | Ended | 0 | 1 | | 1 | December 12, 2012 |
| iFilm Media Group | Ended | 0 | 1 | September 11, 2015 | 1 | September 11, 2015 |
| ETIBANK | Ended | 0 | 1 | August 17, 1959 | 0 | |
| Eregli Demir ve Celik Fabrikalari Turk Anonim Sirketi | Ended | 0 | 1 | December 14, 1960 | 0 | |
| General Administration of Turkish State Seaways & Harbors | Ended | 0 | 1 | February 3, 1950 | 0 | |
| Government of Turkey, Embassy, through the Livingston Group, LLC | Ended | 0 | 1 | February 14, 2000 | 0 | |
| Minister of State for the Economy, Republic of Turkey The Honorable Tansu Ciller | Ended | 0 | 1 | June 4, 1992 | 0 | |
| Ministry of Tourism & Information Government of Republic of Turkey | Ended | 0 | 1 | June 5, 1967 | 0 | |
| Office of the Prime Minister Mesut Yilmaz - Republic of Turkey | Ended | 0 | 1 | December 29, 1997 | 0 | |
| Penajans/DMB & B Ticaret, A.S. Aysegul Dora, Chairman | Ended | 0 | 1 | May 4, 1993 | 0 | |
| Prime Ministry, Undersecretariat for Treasury & Foreign Trade, Republic of Turkey | Ended | 0 | 1 | April 16, 1991 | 0 | |
| Regional Cooperation for Development (RCD) Shipping Committee | Ended | 0 | 1 | August 5, 1965 | 0 | |
| Republic of Turkey (Prime Minister Mesut Yilmaz) (Through firm of Patton Boggs, LLP) | Ended | 0 | 1 | January 15, 1998 | 0 | |
| Turkey | Ended | 0 | 1 | January 17, 1964 | 0 | |
| Turkish Culture & Tourism Office | Ended | 0 | 1 | March 12, 2010 | 0 | |
| Turkish Embassy | Ended | 0 | 1 | March 21, 1989 | 0 | |
| Turkish Government Tourism & Information Office | Ended | 0 | 1 | July 3, 1972 | 0 | |
| Turkish Industrialists & Businessmen Association | Ended | 0 | 1 | March 5, 1976 | 0 | |
| Turkish Industrialists' & Businessman's Association (TUSIAD) | Ended | 0 | 1 | November 13, 1998 | 0 | |
| Turkish Information Office | Ended | 0 | 1 | December 21, 1955 | 0 | |
