| Rakontur | 2000 | — | 1 |
| Randy West Productions | — | — | 1 |
| Red Letter Media | 2004 | — | 1 |
| Regent Releasing | — | — | 1 |
| Regent University | 1978 | — | 1 |
| Republic Records | 1995 | — | 1 |
| Ringling College of Art and Design | 1931 | — | 1 |
| RLJE Films | 1981 | — | 1 |
| Roadrunner Records | 1980 | — | 1 |
| Robert Rossen Productions | — | — | 1 |
| Roddenberry Entertainment | — | — | 1 |
| Roswell Records | 1995 | — | 1 |
| Rota Productions | — | — | 1 |
| Running with Scissors | 1996 | — | 1 |
| Russian War Relief | September 12, 1941 | — | 1 |
| Rustic Canyon Pictures | 2015 | — | 1 |
| Salesforce | February 3, 1999 | — | 1 |
| Schneider's Bakery | June 6, 1996 | — | 1 |
| Seamus Production | — | — | 1 |
| Secret Hideout | — | — | 1 |
| ShadowMachine | 1999 | — | 1 |
| Shakespeare in the Park | — | — | 1 |
| Silvercup Studios | 1983 | — | 1 |
| Siskel/Jacobs Productions | 2005 | — | 1 |
| Six Point Harness | 2003 | — | 1 |
| Skybound Entertainment | 1992 | — | 1 |
| Sneaky Shark | April 2014 | September 14, 2020 | 1 |
| Snee-Oosh | 1986 | — | 1 |
| Snowflake Films | — | — | 1 |
| SoKrispyMedia | 2009 | — | 1 |
| Sony Pictures Television Nonfiction | February 7, 2005 | May 30, 2016 | 1 |
| South Park Digital Studios | — | — | 1 |
| Southwest Indian Foundation | — | — | 1 |
| Spark Media | 1989 | — | 1 |
| Spizoo | — | — | 1 |
| Stampede Entertainment | 1993 | — | 1 |
| Starbucks | March 30, 1971 | — | 1 |
| Starz | February 1994 | — | 1 |
| Story Kitchen | October 2022 | — | 1 |
| Stray Angel Films | 2003 | — | 1 |
| Studio 2000 | 1993 | — | 1 |
| Studiopolis | — | — | 1 |
| Sumerian Records | 2006 | — | 1 |
| Sundance Institute | 1981 | — | 1 |
| Suretone Records | 2006 | — | 1 |
| Television Academy Foundation | — | — | 1 |
| The Bubble Factory | — | — | 1 |
| The Carsey-Werner Company | 1981 | — | 1 |
| The Cunningham Sisters Productions | 2022 | — | 1 |
| The Film Company | — | — | 1 |
| The Firm, Inc. | 1997 | 2008 | 1 |
| The Geometry Center | — | — | 1 |
| The Halcyon Company | 2007 | — | 1 |
| The Island Def Jam Music Group | 1998 | April 2014 | 1 |
| The Lot at Formosa | 1919 | — | 1 |
| The Muppets Studio | 2004 | — | 1 |
| The New School for Social Research | 1933 | — | 1 |
| The New York Times | September 18, 1851 | — | 1 |
| The New York Times Company | September 18, 1851 | — | 1 |
| The Ormond Organization | — | — | 1 |
| The Way of the Master | 2002 | — | 1 |
| Third Degree Films | 2002 | — | 1 |
| Third World Newsreel | 1967 | — | 1 |
| Thomas H. Ince Corporation | 1915 | — | 1 |
| Thug Hunter | — | — | 1 |
| Time | March 3, 1923 | — | 1 |
| Tippett Studio | 1984 | — | 1 |
| Tongal | 2008 | — | 1 |
| Toni Ribas Productions | — | — | 1 |
| Top Cow Productions | 1992 | — | 1 |
| Top Shelf Productions | 1997 | — | 1 |
| Topps | 1938 | — | 1 |
| Total Living Network | 1985 | — | 1 |
| Touchstone Television | December 4, 2014 | December 2020 | 1 |
| Trash Panda Pictures | — | — | 1 |
| Tree Media | — | — | 1 |
| Tribeca | — | — | 1 |
| Tribeca Film Institute | — | — | 1 |
| Tribune Media | 1847 | September 19, 2019 | 1 |
| TriStar Productions | 2013 | — | 1 |
| TruTV | 2008 | — | 1 |
| Turner Classic Movies | April 14, 1994 | — | 1 |
| Turtledove Clemens | 1942 | — | 1 |
| Typhoon Films | — | — | 1 |
| UFO International Productions | 2007 | — | 1 |
| Uncharted Territory | 1999 | — | 1 |
| Unicorn Enterprises | — | — | 1 |
| Unicorn Riot | 2015 | — | 1 |
| UnionDocs | — | — | 1 |
| United States Army Signal Corps | 1863 | — | 1 |
| United States Department of Defense | August 10, 1949 | — | 1 |
| United States Department of the Air Force | September 18, 1947 | — | 1 |
| United States Department of War | 1789 | September 18, 1947 | 1 |
| United States Forces Japan | 1957 | — | 1 |
| United States Forest Service | February 1905 | — | 1 |
| University of California, Los Angeles | July 24, 1919 | — | 1 |
| University of Colorado Boulder | 1876 | — | 1 |
| University Press of Mississippi | 1970 | — | 1 |
| USA Network | 1980 | — | 1 |
| USC Shoah Foundation | 1994 | — | 1 |