Umberto Lenzi (born August 6 1931), is an Italian film director who has mainly been active in low budget crime films.

Lenzi was born in Massa Marittima, southern Tuscany. He is the director of two highly controversial exploitation films: Mangiati vivi (1980) and Cannibal Ferox (1981) as well as the film adaptation of the Italian comic book Kriminal (1966).

Born in Massa Marittima, Italy on August 6, 1931, Umberto Lenzi was a movie enthusiast since his early grade school years. During those years, he founded various film fan clubs while studying law. Lenzi started out as a journalist for various local newspapers and magazines. Lenzi put off his law studies to pursue the technical arts of filmmaking at the Centro Sperimentale de Cinematografia. After graduation from the school, Lenzi continued working as a writer and film critic. He found employment as an assistant director before making his directorial debut with _Adventure di Mary Read, Le (1961)_ (Queen of the Seas). Other pirate sword flicks followed starting with Pirati della Malesia, I (1964) (Pirates of Malaysia) which was part of the height of the career of fictitious tales of historic legendary characters including Robin Hood, Catherine the Great, Zorro, Sandokan and Maciste. For the movie Kriminal (1966), Lenzi turned to the new wave of adult-oriented comic books (known as fumetti) for fresh inspiration and initiated a popular trend. After directing a war film and two "spaghetti westerns", Lenzi turned to the giallo gene with _Orgasmo (1968)_ starring Carroll Baker and Lou Castel, which was the first of his thrillers and one of his personal favorites. Retitled Paranoia for its USA release, Orgasmo caused some confusion since Lenzi directed a movie with the same name of Paranoia in 1970 also with Carroll Baker. During the 1970s Lenzi directed a number of giallo thrillers among them Così dolce... così perversa (1969) (So Sweet, So Perverse), _Sette orchidee macchiate di rosso (1971)_ (Seven Blood-Stained Orchids) and Gatti rossi in un labirinto di vetro (1975) (Eyeball). None of them were particularly successful since Lenzi blamed his tights budgets and poor scripts which he believed no director could make good with. In the late 1970s Lenzi turned to the police thrillers (polizieschi) which rejuvenated his confidence and his popularity. Titles like Milano odia: la polizia non può sparare (1974) (Almost Human), Trucido e lo sbirro, Il (1976) (Free Hand For a Tough Cop), and _Banda del gobbo, La (1977)_ (Brothers Till We Die) were the most popular and brutal of the thrillers. Prior to the polizieschi, Lenzi directed _Paese del sesso selvaggio, Il (1973)_ (Man from Deep River) which was the start of the Italian cannibal sub-genre. A re-telling of the western A Man Called Horse (1970), with a south Asia setting, set the stage for a later group of extremely gory cannibal sub-genre movies most noteworthy being Ruggero Deodato's Ultimo mondo cannibale (1977) (Jungle Holocaust) which featured a potent combination of extreme violence in a documentary realism. Lenzi responded with two very gory jungle cannibal features, _Mangiati vivi (1980)_ (Eaten Alive) and Cannibal ferox (1981) (Make Them Die Slowly) which attempted to outdo Deodato's thrillers. The excess of Make Them Die Slowly, which was banned in 31 countries, make Lenzi distance himself from the cannibal genre. In between Eaten Alive and Make Them Die Slowly, Lenzi directed Incubo sulla città contaminata (1980) (Nightmare City) a zombie flick which Lenzi rejected the slow-moving zombies of the Romero and Fulci movies for a more type of fast-moving, weapons toting, super zombies with action and an anti-nuclear message. During the 1980s and early 1990s Lenzi turned his attention to other genres: action-adventure, war films and even made-for-TV dramas, although he directed the occasional thriller most notable in that time was _Casa 3 - Ghosthouse, La (1987)_ (Ghosthouse). Lenzi's _Porte dell'inferno, Le (1990) (TV)_ (Hell's Gate) is a seldom seen horror film which makes the most of its low budget. Lenzi claimed to have shot it in three weeks at a cost of 300 million lire, whereas low-budget Italian horror films shot in Italy or abroad cost an average of a billion lire or more. It represented a personal challenge for Lenzi since the entire movie takes place in a cave and the suspense is maintained for the entire 90 minutes. As his budgets and financing for his films dwindled, so did his output. The 1990s saw Lenzi directing a number of TV productions that were never broadcast which he lamented on the change in Italian film industry. After 40 years and directing over 60 films, Lenzi has today more or less retired and left his mark as one of the most creative and inexhaustible cult film directors of Italy.