Helmy was born in Banha, Egypt. He graduated from the Higher institute of Dramatic Arts in Egypt, from the decoration department. Ahmed also graduated of the Academy of Arts, High Institute for Theatre Art in 1993.
As an actor and performer, Helmy is notable for his fast-thinking and witty comedy.[citation needed] His career in mainstream Egyptian film began when director Sherif Arafa spotted him on the children's program Leib Eyal (Kids' Play) on the Egyptian Satellite Broadcast[citation needed]. Sherif found in him the comedian actor he was looking for to star his film, Aboud Ala El Hodoud (Aboud at the Frontier). In that film Helmy made his first big screen appearance, co-starring alongside Alaa Waley El Din. Thereafter, he quickly made a jump to leading roles in films such as Omar 2000, El Nazer (The Headmaster), El Selem We Al Tho'ban (Snakes And Ladders).
In 2007, Helmy topped the Egyptian comedian market in number of audience and revenue, mostly due to the success of his movie Keda Reda.