April 21

==Theatrical releases==
===Shorts===
*1930 - Fiddling Around
*1944 - Contrary Condor
===Films===
*1995 - While You Were Sleeping (Hollywood Pictures)
*2017 - Born in China (Disneynature)
*2023 - Chevalier (Searchlight Pictures)
==Television==
*1995 - The Bill Nye the Science Guy episode "Waves" premieres in syndication.
*2001 - The Lloyd in Space episode "Babysitter Lloyd" premieres on ABC.
*2006
**The Brandy & Mr. Whiskers episodes "Go! Fight! Win!/Class Dismissed" premiere on Disney Channel.
**The Emperor's New School premieres on Disney Channel with the episode "Peasant for a Day".
**The That's So Raven episode "Driving Miss Lazy" premieres on Disney Channel.
**The Hannah Montana episode "It's My Party and I'll Lie if I Want To" premieres on Disney Channel.
*2008 - The Emperor's New School premieres on Disney Channel with the episodes "Auction Action/The Astonishing Kuzco-Man".
*2013 - The Once Upon a Time episode "Lacey" premieres on ABC.
*2015 - The Agents of S.H.I.E.L.D. episode "The Frenemy of My Enemy" premieres on ABC.
*2017
**The Puppy Dog Pals episodes "The Go-Long Retriever/Pot O' Pugs" and "A Pyramid Scheme/Special Delivery" premiere on Disney Channel.
**The Lion Guard concludes its first season on Disney Channel with the episode "Ono the Tickbird".
**The Bunk'd episode "Dreams Come True" premieres on Disney Channel.
**The Tangled: The Series episode "Cassandra v. Eugene" premieres on Disney Channel.
**The Stuck in the Middle episode "Stuck without Devices" premieres on Disney Channel.
**The Andi Mack episode "Dancing in the Dark" premieres on Disney Channel.
*2019 - The Star vs. the Forces of Evil episodes "A Boy and His DC-700XE/The Monster and the Queen" and "Cornonation" premiere on Disney Channel.
*2023
**The Mickey Mouse Funhouse episodes "No Thrills, Please!/Space Doggies" premieres on Disney Channel and Disney Jr.
**The Saturdays episodes "Friends for a Minute" and "Feelin' Brand New New" premiere on Disney Channel.
==Streaming==
*2023 - The National Geographic series Secrets of the Elephants premieres on Disney+.
==VHS releases==
*1998 - Flubber
==People==
===Births===
*1915 - Lloyd Richardson † (film editor)
*1949 - Patti LuPone (actress and singer)
*1951 - Tony Danza (actor, television personality, tap dancer, boxer, and teacher)
*1958 - Andie MacDowell (model and actress)
*1961 - Cathy Cavadini (actress, voice actress, and singer)
*1970
**Nicole Sullivan (actress, voice actress, and comedian)
**Rob Riggle (actor, voice actor, comedian, and U.S. Marine)
*1979 - James McAvoy (actor and voice actor)
*1983 - Gugu Mbatha-Raw (actress)
*1995 - Thomas Doherty (actor)
===Deaths===
*1910 - Mark Twain (author writer, humorist, entrepreneur, publisher, and lecturer)
*1978 - Thelma Boardman (voice actress and writer)
*2018 - Verne Troyer (actor, comedian, YouTuber, and stunt performer)
pt-br:21 de Abril
Category:Days in Disney history