| Aeronca | aerospace manufacturer | Cincinnati, Middletown | 1928 |
| Alliant Techsystems | enterprise, public company, aerospace manufacturer | Arlington County | 1990 |
| AviaBellanca Aircraft | aerospace manufacturer | Alexandria | 1927 |
| Ball Aerospace & Technologies | former entity, subsidiary company, aerospace manufacturer | Boulder | 1956 |
| Bigelow Aerospace | startup company, privately held company, business | North Las Vegas | 1999 |
| Boeing | rail vehicle manufacturer, public company, aerospace manufacturer | Chicago | 1934 |
| Brewster Aeronautical Corporation | aerospace manufacturer | — | 1932 |
| Cirrus Aircraft Corporation | aerospace manufacturer | Duluth | 1984 |
| Convair | launch service provider, aerospace manufacturer | San Diego | 1943 |
| Curtiss-Wright | holding company, business, public company, aerospace manufacturer | Charlotte | 1929 |
| Deep Space Industries | business, enterprise | Mountain View | January 22, 2013 |
| Draken International | business | Lakeland | January 2012 |
| Ford Aerospace | business | Milpitas | 1956 |
| GE Aerospace | business, aerospace manufacturer | Evendale | April 15, 1892 |
| General Atomics | business, enterprise | San Diego | 1955 |
| Glenn L. Martin Company | aerospace manufacturer | Baltimore | 1912 |
| Hiller Aircraft Company | business | Firebaugh | 1942 |
| Honeywell | business, enterprise, public company | Charlotte | April 23, 1885 |
| Kaman Corporation | public company, aerospace manufacturer | Bloomfield, Connecticut | 1945 |
| Litton Industries | business, enterprise | Milwaukee | 1953 |
| Lycoming | business | Williamsport | 1845 |
| Masten Space Systems | business | Mojave | 2004 |
| Moon Express | privately held company | Mountain View | 2010 |
| Piasecki Helicopter Corporation | former entity, aerospace manufacturer | Philadelphia | 1940 |
| Pratt & Whitney | business | East Hartford | 1925 |
| Pratt & Whitney Rocketdyne | business, subsidiary company | Canoga Park | 2005 |
| Raytheon | defense contractor, public company | Waltham | July 7, 1922 |
| Rockwell Collins | defense contractor, business, public company, aerospace manufacturer | Cedar Rapids | 1933 |
| Rockwell International | conglomerate, public company | United States | February 1973 |
| Scaled Composites | aerospace manufacturer | Mojave | 1982 |
| Sierra Nevada Corporation | business | Sparks | 1963 |
| Stratolaunch Systems | business, enterprise | Montgomery, Seattle | 2011 |
| Swift Engineering | business, enterprise, aerospace manufacturer | San Clemente | 1983 |
| Thiokol | business, defunct organization | Trenton, Brigham City | 1929 |
| TRW Inc. | business, enterprise | Euclid | 1901 |