Defunct manufacturing companies based in Greater Los Angeles

1921-1967 aerospace manufacturer in the United States

1939–1994 aerospace manufacturer in the United States

discontinued marque of Toyota

1973-2001 aerospace manufacturer

American semiconductor manufacturer

defunct American aerospace and defense contractor

former military vehicle company

Automotive production company

1932-1943 aerospace manufacturer in the United States

Rocketdyne was an American rocket engine design and production company headquartered in Canoga Park, in the western San Fernando Valley of suburban Los Angeles, in southern California.

automobile manufacturer

defense division of Ford Motor Company

former auto company in Southern California, USA

former American firearms company

American power management technology company

Microsemi Corporation was an Aliso Viejo, California-based provider of semiconductor and system solutions for aerospace & defense, communications, data center and industrial markets.