El-Telmissany was born in Cairo, in a very artistic family. His uncle was Kamel El-Telmissany was a leading artist. Together with Ramses Younan, Adam Henein, Fouad Kamel and others he was a founder of
Art and
Liberty in the 1940s. Kamel then ventured into narrative cinema, initially to further propagate the group's brand of surrealism. He soon moved into realist mode, directing the landmark Al-Souq Al-Souda (Black Market) which was banned for almost four years. His father Hassan, followed Kamel into film, becoming a cinematographer employed by
Shell Oil's filmmaking department which produced films about all aspects of Egyptian life –
cultural, economic and social. Shell had sent Hassan to train in
London and later, when the department shut down, he became an independent documentary filmmaker, producing some 20 films with El-Telmissany's uncle Abdel-Qader. Together they formed a company named El-Telmissany Ekhan for producing many important documentary films. It was El-Telmissani's mother, a
housewife, who first opened his eyes to the world of cinema and filmmaking. She accompanied him to Metro movie
theatre to watch children's films and when he was nine brought him to studio Nasbian in Al- Dhaher -- "now it has become a pickle store"—where his uncle (Kamel) was shooting his last film, Al-Nas Eli That (People at the Bottom), with Youssef Wahbi and Mary Munib == Education ==