David Dortort (October 23, 1916 – September 5, 2010), was a Hollywood screenwriter and producer, widely known for his role as producer in two successful NBC television series: Bonanza (1959–73) and The High Chaparral (1967–71). Dortort's focus shifted in the late 1960s to the newer series, leaving the production of Bonanza largely to his associates during its last five and a half years (1967–1973).From 1954-55, Dortort was involved in directing and writing for The Public Defender.