Youcef Zighoud (Arabic: ???? ?????? February 18, 1921 – September 25, 1956), also known as Colonel Si Ahmed, was an Algerian FLN party fighter during the Algerian War.
In August 20 1955, he planned a resistance and struggle against the French occupation in Philippeville (currently called Skikda) and surroundings, which led 123 French soldiers to death.
That resistance led to harsh crackdown and repression that caused (officially) 1,239 dead in the Algerian side, and (unofficially) 12,000 according to the FLN party.
Zighoud, from whom the town of Zighoud Youcef takes its name, was killed in Sidi Mezghiche during a clash with the French Army.