The Boeing Company (pronounced /ˈboʊ.ɪŋ/ boh-ing) is an American multinational aerospace and defense corporation, founded in 1916 by William E. Boeing in Seattle, Washington. Boeing has expanded over the years, merging with McDonnell Douglas in 1997. Boeing Corporate headquarters has been in Chicago, Illinois since 2001. Boeing is made up of multiple business units, which are Boeing Commercial Airplanes (BCA); Boeing Defense, Space & Security (BDS); Engineering, Operations & Technology; Boeing Capital; and Boeing Shared Services Group.

Boeing is among the largest global aircraft manufacturers by revenue, orders and deliveries, and the third largest aerospace and defense contractor in the world based on defense-related revenue. Boeing is the largest exporter by value in the United States. Its stock is a component of the Dow Jones Industrial Average.

In March 1910 William E. Boeing bought Heath's shipyard in Seattle, Washington, on the Duwamish River, which later became his first airplane factory. Boeing was incorporated in Seattle by William Boeing, on July 15, 1916, as "Pacific Aero Products Co.". Boeing, who studied at Yale University, worked initially in the timber industry, where he became wealthy and acquired knowledge about wooden structures. This knowledge would prove invaluable in his subsequent design and assembly of airplanes. The company stayed in Seattle to take advantage of the local supply of Spruce wood.