George Richard Marek (13 July 1902 – 7 January 1987) was an Austrian-born American music executive and author of biographies of classical composers.

He married Muriel Heppner the following year; the couple had one son, editor, publisher, and author Richard Marek.

Marek was instrumental in promoting the recordings of pianists Gary Graffman and Arthur Rubinstein and conductors Pierre Monteux, Fritz Reiner, and Arturo Toscanini.

He died at the age of 84 at St. Luke's-Roosevelt Hospital Center in New York City; he was survived by his wife and their son, and two brothers, Carl and Frederick, both of Manhattan, and a sister, Anneliese Fish, of White Plains.

Marek also wrote magazine articles, e.g. for Harper's Bazaar, and liner notes; he was nominated for the 1977 Grammy Award for Best Album Notes for Beethoven: The Five Piano Concertos, with Daniel Barenboim conducting the London Philharmonic Orchestra and Arthur Rubinstein playing the piano.