Peter Carl Goldmark (Hungarian: Goldmark Péter Károly) (December 2, 1906 – December 7, 1977) was a German-Hungarian engineer who, during his time with Columbia Records, was instrumental in developing the long-playing (LP) microgroove 33-1/3 rpm vinyl phonograph disc, the standard for incorporating multiple or lengthy recorded works on a single disc for two generations. The LP was introduced by Columbia's Goddard Lieberson (April 5, 1911 – May 29, 1977) in 1948. Lieberson was later president of Columbia Records from 1956–71 and 1973–75.
Goldmark got his first exposure to television in 1926 while in graduate school in Vienna. He later hoped to work with John Logie Baird but was turned down for a job after meeting Baird for lunch in London. In 1936, Goldmark joined CBS Laboratories, and one year later he became a naturalized citizen of the United States.
In addition to his work on the LP record, Goldmark developed a technology for color television while at CBS. The system, first demonstrated on August 29, 1940, and shown to the press on September 3 used a rapidly rotating color wheel that alternated transmission in red, green and blue. The system transmitted on 343 lines, about 100 less than a black and white set, and at a different field scan rate, and thus was incompatible with television sets currently on the market without an adapter.