The Boeing P-26 "Peashooter" is the first American production all-metal fighter aircraft and the first pursuit monoplane to enter squadron service with the United States Army Air Corps.

Designed and built by Boeing, the prototype first flew in 1932, and the type was still in use with the U.S. Army Air Corps as late as 1941 in the Philippines.

Nonetheless, rapid progress in aviation led to it quickly becoming an anachronism, with wire-braced wings, fixed landing gear and an open cockpit.

By 1935, just three years after the P-26, the Curtiss P-36, Messerschmitt Bf 109 and Hawker Hurricane were flying, all with enclosed cockpits, retractable landing gear and cantilever wings.

Deliveries to USAAC pursuit squadrons began in December 1933 with the last production P-26C aircraft coming off the assembly line in 1936.

[8] Subsequent engagements between the Chinese 281 pilots and Japanese Navy Mitsubishi A5Ms were the first aerial dogfights and kills between all-metal monoplane fighter aircraft.

[18] Nine P-26s remained airworthy with the United States Army Air Forces (as the USAAC had been renamed in June 1941) in the Panama Canal Zone.

During 1942–1943, the Fuerza Aérea Guatemalteca (Guatemalan Air Force) acquired seven P-26s, which the United States government delivered to Guatemala as "Boeing PT-26A" trainers to circumvent restrictions on sales of fighters to Latin American countries.

[20] The final pair of P-26s still flying in military service in the world would be replaced with North American P-51 Mustangs two years later in 1956.