Machiko Kyō (Japanese: 京 マチ子, Hepburn: Kyō Machiko, March 25, 1924 – May 12, 2019) was a Japanese actress whose film work occurred mainly in the 1950s. She received extraordinary recognition in her native Japan for her work in two of the greatest Japanese films of the 20th century — Akira Kurosawa's Rashomon and Kenji Mizoguchi's Ugetsu.

Machiko trained as a dancer before coming to film in 1949. The following year she achieved international fame as the female lead in Akira Kurosawa's classic film Rashomon. Kyō appeared in many other Japanese productions, including Kenji Mizoguchi's Ugetsu (1953) and Street of Shame (1956), Teinosuke Kinugasa's Gate of Hell (1953), Kon Ichikawa's Odd Obsession (1959), Yasujirō Ozu's Floating Weeds (1959), and Hiroshi Teshigahara's The Face of Another (1966).

Her only role in a non-Japanese film was as Lotus Blossom, a young geisha, in The Teahouse of the August Moon, in which she appeared alongside Marlon Brando and Glenn Ford.

At the age of eighty, Kyō continued to perform in traditional Japanese theatrical productions organized by the renowned producer Fukuko Ishii. Her last role was as Matsuura Shino in the NHK television drama Haregi Koko Ichiban in 2000. Kyō was nominated for a Golden Globe for The Teahouse of the August Moon, which was a great achievement for an Asian actress at the time, and received numerous awards, including a lifetime achievement award from the Japan Academy Prize.