White Knight
A white knight is a fictional stock character representing a gallant knight.
White Knight may also refer to:

People and titles
White Knight (Fitzgibbon family), a Hiberno-Norman title of nobility
Lewis Carroll, who referred to himself as White Knight

Art, entertainment and media
Fictional entities
Knight-errant, a literary stock character portrayed as a white knight
White Knight (Through the Looking-Glass), a character in Through the Looking Glass which resembles the chess-piece
"Gotham's White Knight", a nickname given to Harvey Dent in The Dark Knight (2008)
White Knight, James Bond's codename while infiltrating a terrorist military base in the beginning of Tomorrow Never Dies
White Knight, a character in the Generator Rex cartoon series
White Knight, a playable character class in the popular MMORPG MapleStory
White Knight, the name of the train engine in the Tokyopop manga Snow
The Knights of Falador, a fictional organisation in the online game RuneScape

Games
Knight (chess), playing piece in the game of chess
White knight, a knight in chess
White Knight Chronicles, a video game by Level-5 for the PlayStation 3 and PlayStation 4

Film and television
White Knight (film), an Indian short documentary film directed by Aarti Shrivastava
"The White Knight" (The Legend of Zelda), an episode of The Legend of Zelda
"White Knights" (Legends of Tomorrow), an episode of Legends of Tomorrow

Other
The White Knight (book), a 1952 biography of Lewis Carroll
"The White Knight" (Cledus Maggard song), a 1976 hit single by Cledus Maggard
Batman: White Knight, a comic series by Sean Murphy
White Knight (album), by Todd Rundgren

Vehicles
Scaled Composites White Knight, the aircraft used to carry and launch Scaled Composites SpaceShipOne
Scaled Composites White Knight Two, the technological successor of the first
Posnansky/Fronius PF-1 White Knight, a glider
HMM-165, a helicopter squadron in the US Marine Corps, nicknamed White Knights
White knight (intelligence firm), an organization owned by Joel Zamel

Other uses
White knight (business), a friendly investor that acquires a corporation
White Knight (chocolate), an Australian mint flavored chocolate candy bar
White Knight (software), a terminal program for Macintosh computers
White Knights of the Ku Klux Klan, one of the most violent and militant branches of the Ku Klux Klan

See also
John Hunyadi, nicknamed the White Knight of Wallachia
White horse (disambiguation)
White night (disambiguation)