| 65 M ST. INC. | — | 551461 | 1955-06-29 | Revoked | |
| 65 M STREET N.W INC. | — | 551460 | 1955-10-06 | Revoked | |
| 65 M STREET N.W INC. | — | 551460 | 1955-10-06 | Revoked | |
| 65 Peak LLC | — | L00006649108 | 2020-05-28 | Active | Washington |
| 65 Peak LLC | — | L00006649108 | 2020-06-25 | Revoked | |
| 65 Project LLC | — | L00007415429 | 2022-07-19 | Dissolved | |
| 65 Project LLC | — | L00007415429 | 2022-07-13 | Dissolved | Washington |
| 65 Q St SW LLC | — | L00005525820 | 2016-10-17 | Revoked | ARLINGTON |
| 65 Q St SW LLC | — | L00005525820 | 2016-10-21 | Revoked | |
| 650 Lamont BL LLC | — | L00005177995 | 2015-04-16 | Active | |
| 650 Lamont BL LLC | — | L00005177995 | 2015-04-16 | Active | N. Charleston |
| 650 Lamont BL Manager LLC | — | L00005201906 | 2015-05-18 | Active | |
| 650 Lamont BL Manager LLC | — | L00005201906 | 2015-05-18 | Active | North Charleston |
| 650 Lamont Street LLC | — | L00004751072 | 2013-05-14 | Dissolved | Washington |
| 650 Lamont Street LLC | — | L00004751072 | 2013-05-14 | Dissolved | |
| 650 MASSACHUSETTS AVENUE ASSOCIATES LIMITED PARTNERSHIP | — | 074488 | 1987-09-02 | Merged | LEGACY NO DATA |
| 650 MASSACHUSETTS AVENUE ASSOCIATES LIMITED PARTNERSHIP | — | 074488 | 1987-09-02 | Merged | |
| 650 MASSACHUSETTS AVENUE BAKERY, LLC | — | L00005667519 | 2017-04-04 | Dissolved | |
| 650 MASSACHUSETTS AVENUE BAKERY, LLC | — | L00005667519 | 2017-04-04 | Dissolved | New York |
| 650 MASSACHUSETTS AVENUE NW TENANT LLC | — | L00005324443 | 2015-12-28 | Withdrawn | |
| 650 MASSACHUSETTS AVENUE NW TENANT LLC | — | L00005324443 | 2016-01-19 | Withdrawn | NEW YORK |
| 650 Morton Street NW LLC | — | L00007492540 | 2022-10-26 | Revoked | |
| 650 Morton Street NW LLC | — | L00007492540 | 2022-10-26 | Active | Washington |
| 650 Strategy LLC | — | L00005747687 | 2017-07-27 | Active | Washington |
| 650 Strategy LLC | — | L00005747687 | 2017-07-27 | Active | |
| 650 WATER STREET INC. | — | 681935 | 1968-10-07 | Revoked | Washington |
| 650 WATER STREET INC. | — | 681935 | 1968-10-07 | Revoked | |
| 6500 CHILLUM ASSOCIATES LIMITED PARTNERSHIP | — | P01807 | 1983-05-18 | Dissolved | Rockville |
| 6500 CHILLUM ASSOCIATES LIMITED PARTNERSHIP | — | P01807 | 1983-05-18 | Dissolved | |
| 6501 Investments LLC | — | L00008440850 | 2025-06-09 | Active | |
| 6501 Investments LLC | — | L00008440850 | 2025-06-09 | Active | Washington |
| 651 Maryland Avenue NE LLC | — | L00005782144 | 2017-09-17 | Dissolved | Washington |
| 651 Maryland Avenue NE LLC | — | L00005782144 | 2017-09-17 | Dissolved | |
| 651 Strategies LLC | — | L00008409118 | 2025-04-28 | Active | |
| 651 Strategies LLC | — | L00008409118 | 2025-03-16 | Active | Washington |
| 6512 Capitol Homes LLC | — | L00007837738 | 2023-11-09 | Active | |
| 6512 Capitol Homes LLC | — | L00007837738 | 2023-11-09 | Revoked | Bowie |
| 6514 5TH STREET L.L.C. | — | L47166 | 2009-12-02 | Revoked | |
| 6514 5TH STREET L.L.C. | — | L47166 | 2009-12-02 | Revoked | |
| 6515 8th KNS LLC | — | L00005702797 | 2017-05-15 | Revoked | |
| 6515 8th KNS LLC | — | L00005702797 | 2017-05-15 | Revoked | Rockville |
| 6515 8th St LLC | — | L00005687611 | 2017-04-25 | Dissolved | |
| 6515 8th St LLC | — | L00005687611 | 2017-04-25 | Dissolved | Washington |
| 6516 GEORGIA AVE. Corp. | — | 900217 | 1990-01-18 | Active | |
| 6516 GEORGIA AVE. Corp. | — | 900217 | 1990-01-18 | Active | WASHINGTON |
| 652 L STREET, NE, LLC | — | L00004648483 | 2012-11-23 | Revoked | |
| 652 L STREET, NE, LLC | — | L00004648483 | 2012-11-23 | Revoked | WASHINGTON |
| 652 Madison Street LLC | — | L00005224133 | 2015-07-01 | Dissolved | |
| 652 Madison Street LLC | — | L00005224133 | 2015-06-30 | Dissolved | Washington |
| 653 8TH STREET, N.E., LLC. | — | L21950 | 2005-01-21 | Dissolved | |
| 653 8TH STREET, N.E., LLC. | — | L21950 | 2005-01-21 | Dissolved | |
| 653 EAST CAPITOL STREET TENANT ASSOCIATION INC. | — | 971297 | 1997-04-23 | Revoked | |
| 653 EAST CAPITOL STREET TENANT ASSOCIATION INC. | — | 971297 | 1997-04-23 | Revoked | |
| 653 East Cap LLC | — | L00008213239 | 2024-11-28 | Active | |
| 653 East Cap LLC | — | L00008213239 | 2024-11-21 | Active | ROCKVILLE |
| 653 Hamilton L.L.C. | — | L00005042505 | 2014-09-30 | Revoked | Bowie |
| 653 Hamilton L.L.C. | — | L00005042505 | 2014-09-30 | Revoked | |
| 653 Maryland LLC | — | L00005467614 | 2016-06-27 | Revoked | Washington |
| 653 Maryland LLC | — | L00005467614 | 2016-06-27 | Revoked | |
| 653 ORLEANS PLACE LLC | — | L49209 | 2010-04-19 | Revoked | |
| 653 ORLEANS PLACE LLC | — | L49209 | 2010-04-19 | Revoked | |
| 653 PENN AVE LLC | — | L00004844250 | 2013-12-11 | Revoked | |
| 653 PENN AVE LLC | — | L00004844250 | 2013-12-11 | Revoked | BETHESDA |
| 653 Saratoga Apt. Tenants Association | — | N00007965516 | 2024-03-14 | Revoked | |
| 653 Saratoga Apt. Tenants Association | — | N00007965516 | 2024-03-07 | Revoked | Washington |
| 655 15TH STREET NW TENANT LLC | — | L00005295754 | 2015-01-05 | Withdrawn | |
| 655 15TH STREET NW TENANT LLC | — | L00005295754 | 2015-11-16 | Withdrawn | New York |
| 655 16TH STREET, LLC | — | L00004858472 | 2014-01-15 | Revoked | WASHINGTON |
| 655 16TH STREET, LLC | — | L00004858472 | 2014-01-15 | Revoked | |
| 655 MEA KENSINGTON PL LLC | — | L00006356007 | 2019-07-30 | Revoked | |
| 655 MEA KENSINGTON PL LLC | — | L00006356007 | 2019-07-28 | Revoked | CHANTILLY |
| 655 MEA1 KENSINGTON PL LLC | — | L00006356001 | 2019-07-28 | Revoked | CHANTILLY |
| 655 MEA1 KENSINGTON PL LLC | — | L00006356001 | 2019-07-30 | Revoked | |
| 655 NEW YORK AVENUE NORTHWEST TENANT LLC | — | L00006399532 | 2019-02-21 | Active | |
| 655 NEW YORK AVENUE NORTHWEST TENANT LLC | — | L00006399532 | 2019-09-30 | Active | New York |
| 655 New York Borrower LLC | — | L00005364912 | 2016-03-09 | Withdrawn | WASHINGTON |
| 655 New York Borrower LLC | — | L00005364912 | 2015-11-25 | Withdrawn | |
| 655 New York LLC | — | L00005309542 | 2015-11-19 | Active | |
| 655 New York LLC | — | L00005309542 | 2015-11-24 | Active | Washington |
| 656 9th ST NE L.L.C. | — | L00007127220 | 2021-09-29 | Dissolved | Washington |
| 656 9th ST NE L.L.C. | — | L00007127220 | 2021-09-29 | Dissolved | |
| 656 L STREET, LLC | — | L29026 | 2006-06-28 | Revoked | |
| 656 L STREET, LLC | — | L29026 | 2006-06-28 | Revoked | WASHINGTON |
| 656 Orleans LLC | — | L00004810989 | 2013-09-16 | Revoked | |
| 656 Orleans LLC | — | L00004810989 | 2013-09-16 | Revoked | Washington |
| 656 PENNSYLVANIA AVENUE, LLC | — | L03916 | 1999-06-04 | Active | |
| 656 PENNSYLVANIA AVENUE, LLC | — | L03916 | 1999-06-04 | Active | Washington |
| 659 C STREET, LLC | — | L44408 | 2009-06-24 | Active | |
| 659 C STREET, LLC | — | L44408 | 2009-06-24 | Active | Washington |
| 65TH STREET APARTMENTS LTD. | — | P02519 | 1980-07-10 | Revoked | |
| 65TH STREET APARTMENTS LTD. | — | P02519 | 1980-07-10 | Revoked | LEGACY NO DATA |
| 66 NEW YORK AVENUE, N.W. INC. | — | 551459 | 1955-06-06 | Withdrawn | |
| 66 NEW YORK AVENUE, N.W. INC. | — | 551459 | 1955-06-06 | Withdrawn | |
| 66 PRINTING PARTNERS LLC | — | L12201 | 2002-08-09 | Revoked | |
| 66 PRINTING PARTNERS LLC | — | L12201 | 2002-08-09 | Revoked | |
| 66 PROPERTY LLC | — | L00006787372 | 2020-11-03 | Revoked | |
| 66 PROPERTY LLC | — | L00006787372 | 2020-11-03 | Revoked | WASHIINGTON |
| 66 U St LLC | — | L00008546460 | 2025-10-15 | Revoked | Washington |
| 66 U St LLC | — | L00008546460 | 2025-10-15 | Active | |
| 660 ACKER STREET NE LLC | — | L35537 | 2007-10-09 | Revoked | |
| 660 ACKER STREET NE LLC | — | L35537 | 2007-10-09 | Revoked | |
| 660 MORTON PL., LLC | — | L24984 | 2005-08-26 | Revoked | |
| 660 MORTON PL., LLC | — | L24984 | 2005-08-26 | Revoked | Washington |
| 660 MORTON PLACE ACQUISITION PARTNERS LLC | — | L26077 | 2005-11-18 | Revoked | |
| 660 MORTON PLACE ACQUISITION PARTNERS LLC | — | L26077 | 2005-11-18 | Revoked | Washington DC |
| 660 N Capitol Owner, LLC | — | US-DC-FN072601159 | 2026-07-20 | Active | Wilmington |
| 660 NC LLC | — | C00007838680 | 2023-11-10 | Active | El Segundo |
| 660 NC LLC | — | C00007838680 | 2023-10-16 | Active | |
| 660 NORTH CAPITOL ST NW TENANT LLC | — | L00006399742 | 2018-10-15 | Withdrawn | |
| 660 NORTH CAPITOL ST NW TENANT LLC | — | L00006399742 | 2019-10-01 | Withdrawn | New York |
| 660 NORTH CAPITOL STREET PROPERTY LLC | — | L19171 | 2004-05-28 | Withdrawn | |
| 660 NORTH CAPITOL STREET PROPERTY LLC | — | L19171 | 2004-05-28 | Withdrawn | WASHINGTON |
| 660 PENNSYLVANIA AVENUE ASSOCIATES, LLC | — | L19288 | 2004-06-09 | Active | |
| 660 PENNSYLVANIA AVENUE ASSOCIATES, LLC | — | L19288 | 2004-06-09 | Active | Washington |
| 660 SOCIAL CLUB | — | 551455 | 1955-05-19 | Revoked | |
| 660 SOCIAL CLUB | — | 551455 | 1955-05-19 | Revoked | |
| 6600 LLC | — | L07331 | 2000-12-28 | Active | |
| 6600 LLC | — | L07331 | 2000-12-28 | Active | Washington |
| 6601 Ventures LLC | — | C00007924371 | 2020-09-01 | Active | |
| 6601 Ventures LLC | — | C00007924371 | 2024-03-01 | Active | Richmond |
| 6606 CORPORATION | — | 620724 | 1962-11-23 | Revoked | |
| 6606 CORPORATION | — | 620724 | 1962-11-23 | Revoked | |
| 6608 Piney Branch NW LLC | — | L00006454405 | 2019-12-12 | Revoked | |
| 6608 Piney Branch NW LLC | — | L00006454405 | 2019-12-12 | Revoked | Washington |
| 6609 Third Street NW LLC | — | L00007103432 | 2021-09-07 | Revoked | Washington |
| 6609 Third Street NW LLC | — | L00007103432 | 2021-09-07 | Revoked | |
| 661 MORRIS PLACE LIMITED PARTNERSHIP | — | 021989 | 1989-06-26 | Revoked | LEGACY NO DATA |
| 661 MORRIS PLACE LIMITED PARTNERSHIP | — | 021989 | 1989-06-26 | Revoked | |
| 6611 BRADLEY BLVD LLC | — | L00006021710 | 2018-06-27 | Revoked | |
| 6611 BRADLEY BLVD LLC | — | L00006021710 | 2018-06-27 | Revoked | BETHESDA |
| 6611 NW LLC | — | US-DC-LL072600991 | 2026-07-16 | Active | Washington |
| 6614 REDFIELD LLC | — | L00005552936 | 2016-12-16 | Revoked | |
| 6614 REDFIELD LLC | — | L00005552936 | 2016-12-16 | Revoked | WASHINGTON |
| 6614 Second Street LLC | — | L00005826209 | 2017-12-04 | Dissolved | |
| 6614 Second Street LLC | — | L00005826209 | 2017-12-01 | Dissolved | Washington |
| 662 Irving UMD LLC | — | L00007218710 | 2022-02-03 | Revoked | |
| 662 Irving UMD LLC | — | L00007218710 | 2022-02-03 | Revoked | Washington |
| 6627 FIRST STREET LLC | — | L41298 | 2008-11-06 | Active | |
| 6627 FIRST STREET LLC | — | L41298 | 2008-11-06 | Active | Fairfax |
| 6630 23rd Place LLC | — | L00005570918 | 2017-01-25 | Revoked | |
| 6630 23rd Place LLC | — | L00005570918 | 2017-01-25 | Revoked | Washington |
| 6630 GEORGIA AVENUE LLC | — | L13641 | 2003-01-09 | Active | |
| 6630 GEORGIA AVENUE LLC | — | L13641 | 2003-01-09 | Active | Southport |
| 6630 GEORGIA AVENUE, N.W. TENANTS ASSOCIATION INC. | — | 900753 | 1990-02-28 | Revoked | |
| 6630 GEORGIA AVENUE, N.W. TENANTS ASSOCIATION INC. | — | 900753 | 1990-02-28 | Revoked | |
| 6630 LIMITED PARTNERSHIP | — | P00801 | 1985-12-16 | Revoked | |
| 6630 LIMITED PARTNERSHIP | — | P00801 | 1985-12-16 | Revoked | LEGACY NO DATA |
| 6632 GEORGIA AVENUE, N.W. TENANTS ASSOCIATES INC. | — | 900755 | 1990-02-28 | Revoked | |
| 6632 GEORGIA AVENUE, N.W. TENANTS ASSOCIATES INC. | — | 900755 | 1990-02-28 | Revoked | |
| 6634 Eastern Ave L.L.C. | — | L00006027897 | 2018-07-05 | Revoked | |
| 6634 Eastern Ave L.L.C. | — | L00006027897 | 2018-07-05 | Revoked | Washington |
| 6634-6638 Georgia Avenue NW Washington DC 20011 Tenant Association | — | N00007442868 | 2022-08-19 | Revoked | |
| 6634-6638 Georgia Avenue NW Washington DC 20011 Tenant Association | — | N00007442868 | 2022-08-17 | Revoked | Washington |
| 6634-6640 Georgia Ave NW LLC | — | L00007637614 | 2023-03-22 | Revoked | |
| 6634-6640 Georgia Ave NW LLC | — | L00007637614 | 2023-03-22 | Revoked | Washington |
| 664 Irving street L.L.C. | — | L00005299123 | 2015-11-23 | Revoked | Potomac |
| 664 Irving street L.L.C. | — | L00005299123 | 2015-11-23 | Revoked | |
| 6645 GEORGIA AVE. NW TENANT ASSOCIATION INC. | — | 250025 | 2005-01-05 | Revoked | |
| 6645 GEORGIA AVE. NW TENANT ASSOCIATION INC. | — | 250025 | 2005-01-05 | Revoked | |
| 6645 GEORGIA AVENUE LLC | — | L10246 | 2002-01-04 | Revoked | |
| 6645 GEORGIA AVENUE LLC | — | L10246 | 2002-01-04 | Revoked | |
| 6645 GEORGIA AVENUE NW LLC | — | L20817 | 2004-10-19 | Revoked | |
| 6645 GEORGIA AVENUE NW LLC | — | L20817 | 2004-10-19 | Revoked | |
| 666 ASSOCIATES LLC | — | L02453 | 1998-04-21 | Revoked | |
| 666 ASSOCIATES LLC | — | L12558 | 2002-09-17 | Dissolved | |
| 666 ASSOCIATES LLC | — | L02453 | 1998-04-21 | Revoked | |
| 666 ASSOCIATES LLC | — | L12558 | 2002-09-17 | Dissolved | |
| 666-11TH STREET ASSOCIATES L.L.C. | — | L32020 | 2007-02-06 | Dissolved | |
| 666-11TH STREET ASSOCIATES L.L.C. | — | L32020 | 2007-02-06 | Dissolved | |
| 66TH ARMORED REGIMENT ASSOC. | — | 031026 | 1947-10-22 | Revoked | |
| 66TH ARMORED REGIMENT ASSOC. | — | 031026 | 1947-10-22 | Revoked | |
| 67 K CORP. | — | 560447 | 1956-06-04 | Dissolved | |
| 67 K CORP. | — | 560447 | 1956-06-04 | Dissolved | |
| 67 Q St SW LLC | — | L00005463545 | 2016-06-20 | Revoked | |
| 67 Q St SW LLC | — | L00005463545 | 2016-06-20 | Revoked | Arlington |
| 67 Sheridan St NE L.L.C. | — | L00007098202 | 2021-08-30 | Active | Potomac |
| 67 Sheridan St NE L.L.C. | — | L00007098202 | 2021-08-30 | Active | |
| 67 V STREET CONDOMINIUM UNIT OWNERS' ASSOCIATION, INC. | — | N00005515101 | 2016-09-27 | Revoked | |
| 67 V STREET CONDOMINIUM UNIT OWNERS' ASSOCIATION, INC. | — | N00005515101 | 2016-09-27 | Revoked | Washington |
| 670 9th LLC | — | L00008532160 | 2025-09-24 | Active | |
| 670 9th LLC | — | L00008532160 | 2025-09-24 | Dissolved | Draper |
| 6703 KC LLC | — | L00007550973 | 2023-01-23 | Active | Washington |
| 6703 KC LLC | — | L00007550973 | 2023-01-23 | Active | |
| 6708 4th St NW LLC | — | L00006629803 | 2020-05-18 | Revoked | Washingtonn |
| 6708 4th St NW LLC | — | L00006629803 | 2020-05-18 | Revoked | |
| 6709 STANTON RD LLC | — | L00005294245 | 2010-07-19 | Revoked | |
| 6709 STANTON RD LLC | — | L00005294245 | 2015-11-12 | Revoked | LAUREL |
| 6713 14TH STREET L.L.C. | — | L03763 | 1999-04-28 | Active | |
| 6713 14TH STREET L.L.C. | — | L03763 | 1999-04-28 | Active | Washington |
| 6729 PINEY BRANCH ROAD LLC | — | L00004814722 | 2013-09-24 | Revoked | WASHINGTON |
| 6729 PINEY BRANCH ROAD LLC | — | L00004814722 | 2013-09-24 | Revoked | |
| 673 M ASSOCIATES L.L.C. | — | L00311 | 1995-06-05 | Revoked | |
| 673 M ASSOCIATES L.L.C. | — | L00311 | 1995-06-05 | Revoked | |
| 6732 13th Place NW LLC | — | L00004681016 | 2013-02-20 | Revoked | |
| 6732 13th Place NW LLC | — | L00004681016 | 2013-02-20 | Revoked | Washington |
| 675 E STREET LLC | — | L08091 | 2001-03-27 | Revoked | |
| 675 E STREET LLC | — | L08091 | 2001-03-27 | Revoked | |
| 675 Jefferson LLC | — | L00005955920 | 2018-04-02 | Withdrawn | |
| 675 Jefferson LLC | — | L00005955920 | 2018-04-02 | Withdrawn | Vienna |
| 675820 E, LLC | — | C00006798406 | 2019-07-25 | Revoked | |