| Kingdom of Saudi Arabia | 03/06/2002 | | 601 New Hampshire Avenue, N.W. | DC | QORVIS LLC | 5483 | 03/06/2002 | |
| Prince Bandar bin Sultan bin Abdulaziz Al-Saud - William Simpson - Wafic Said | 12/01/2006 | 06/08/2007 | | | QORVIS LLC | 5483 | 03/06/2002 | |
| World Council of Religious Leaders | 01/22/2019 | 09/30/2019 | 350 Fifth Avenue, 59th Floor New York 10118 | NY | QORVIS LLC | 5483 | 03/06/2002 | |
| Muslim World League | 03/15/2019 | 10/01/2022 | Makkah Al-Mukarramah Omm al Joud, Old Jeddah Road | | QORVIS LLC | 5483 | 03/06/2002 | |
| King Salman Humanitarian Aid & Relief Center | 04/01/2019 | | PO Box 88830 Riyadh, 11672 | | QORVIS LLC | 5483 | 03/06/2002 | |
| Saudi Aramco | 05/23/2001 | 02/01/2002 | P.O. Box 5000 Dhahran 31311 | | LPI Consulting, Inc. | 5434 | 05/23/2001 | 05/31/2003 |
| Royal Embassy of Saudi Arabia - (through Qorvis Communications, LLC) | 01/24/2002 | 02/01/2008 | 601 New Hampshire Avenue, N.W. 20037 | DC | Gallagher Group, LLC | 5467 | 01/24/2002 | 01/31/2008 |
| Vela International Marine Limited | 07/09/2002 | 12/31/2002 | Vela International Marine Limited, Tower Building, Room T-1031, Dhahran, 31311 | | Scott, Thomas J. | 5509 | 07/09/2002 | 12/31/2002 |
| Center for Studies and Media Affairs at the Saudi Royal Court | 03/15/2016 | 08/03/2018 | 601 New Hampshire Avenue, NW Washington 20037 | DC | BGR Government Affairs, LLC | 5430 | 05/10/2001 | |
| The Embassy of The Kingdom of Saudi Arabia | 08/14/2018 | 10/17/2018 | 601 New Hampshire Ave NW Washington | | BGR Government Affairs, LLC | 5430 | 05/10/2001 | |
| Muslim World League | 06/02/2022 | 05/31/2023 | 5300, Old Makkah Jeddah Road, Umm Al-Joud Makkah Al-Mukarramah | | BGR Government Affairs, LLC | 5430 | 05/10/2001 | |
| Royal Embassy of Saudi Arabia | 06/06/2017 | 09/30/2018 | 601 New Hampshire Avenue, NW Washington 20037 | DC | Harbour Group, LLC | 5478 | 03/04/2002 | 03/31/2022 |
| Government of the Kingdom of Saudi Arabia | 07/21/1999 | 01/01/2024 | Riyadh | | Saudi Petroleum International, Inc. | 5321 | 07/21/1999 | 01/01/2024 |
| Saudi Arabian Oil Company (Saudi Aramco) | 07/21/1999 | 01/01/2024 | Dhahran | | Saudi Petroleum International, Inc. | 5321 | 07/21/1999 | 01/01/2024 |
| Royal Embassy of Saudi Arabia | 12/06/2002 | 01/01/2009 | 601 New Hampshire Avenue, N.W. 20037 | DC | Loeffler Group, LLP | 5432 | 05/18/2001 | 05/31/2009 |