Grandmaster or Grand Master may refer to:
People
Grandmaster Flash, Joseph Saddler (born 1958), hip-hop musician and disc jockey
Grandmaster Melle Mel, Melvin Glover (born 1961), hip-hop musician
"Grandmaster Sexay", nickname for professional wrestler Brian Christopher
Arts, entertainment, and media
Fictional characters
Grand Master (Jedi), also known as "Jedi Grand Master", or formally "Grand Master of the Jedi Order"—Order of the Jedi in Star Wars
Grandmaster (DC Comics), a DC Comics character
Grandmaster (Marvel Comics), a Marvel Comics character
"Grandmaster B", a nickname used by Bud Bundy from the TV sitcom Married... with Children
Grand Master of Witches, a fictional character from the anime Tweeny Witches
The Grand Master, a recurring antagonist in the television series M. I. High
Films
Grandmaster (1972 film), a Soviet drama film by Sergey Mikaelyan
Grandmaster (2012 film), an Indian film by B. Unnikrishnan
The Grandmaster (film), a 2013 Hong Kong film by Wong Kar-wai
Music
Grandmasters (album), an album by DJ Muggs and GZA
Positions
Grand Master (ancient China)
Grand Master (order), the head of various orders
Grand Master of the Knights Hospitaller
Grand Master of the Knights Templar
Grand Master of the Teutonic Order
Grand Master (Masonic)
Grand Master of Education, Science, and Culture, Francisco Macías Nguema (1924–1979), the first president of Equatorial Guinea
Grand Master (Freemasonry), title of honour given to a freemason who oversees a Masonic jurisdiction
Ranks / titles
Grand master
Grand Master, a rank in competitive shooting within the USPSA and IPSC
Grand Master, the highest skill ranking in the Tetris: The Grand Master video game series
Damon Knight Memorial Grand Master Award, awarded by the Science Fiction and Fantasy Writers of America
Grand Master of Memory, awarded by the World Memory Sports Council
Grandmaster
Grandmaster (chess)
Grandmaster (martial arts)
Grandmaster or Master craftsman, a member of a guild
Grandmaster, the highest skill ranking in the Overwatch video game
MWA Grand Master Award, awarded by the Mystery Writers of America
Spectrum Award for Grand Master awarded by Spectrum Fantastic Art
World Grand Master (bridge), maintained by the World Bridge Federation
World Horror Convention Grand Master Award, voted by participants in the annual World Horror Convention
Other uses
Grand Master (custom car), winner of the 2002 Ridler Award
Grandmaster, the source for the time reference in Precision Time Protocol