The 20th century of the Common Era began on 1 January 1901 and ended on 31 December 2000, according to the Gregorian calendar.
20th century may also refer to: 20th century BC
Film and theatre 20th Century Studios, a film company formerly known as 20th Century Fox that has been owned by The Walt Disney Company since 2019 Twentieth Century Pictures, one of the predecessors of 20th Century Studios (along with Fox Film) Twentieth Century (play), a 1932 Broadway play Twentieth Century (film), a 1934 American comedy On the Twentieth Century, a 1978 musical based on the play and film The Twentieth Century, the 1957–1970 television series 20th Century with Mike Wallace, the 1990s–2000s television series The Twentieth Century (film), a 2019 film by Matthew Rankin 20th Century Girl, a 2022 film by Bang Woo-ri
Music 20th Century Records, a record label begun as a soundtrack division of Twentieth Century Pictures 20th Century, a sub-unit of Japanese boyband V6 Twentieth Century (Cold Chisel album), 1984, or the title song Twentieth Century (Alabama album), 1999, or the title song 20th Century (3X Krazy album) 20th Century (John Sykes album) "Twentieth Century", a song by Pet Shop Boys from Fundamental
Other Twentieth Century (typeface), a sans-serif typeface 20th Century (cocktail), a gin cocktail Twentieth Century Motor Car Corporation, a failed automobile company The Twentieth Century (periodical), a continuation of The Nineteenth Century (periodical) XXth Century, Nazi Germany-funded journal in Shanghai published by Klaus Mehnert
See also 20th Century Limited, the flagship passenger train of the New York Central Railroad