In total,there were 31 inmates who tried to escape.There were 23 caught,6 were shot and killed, and 2 were presumed drowned

Two men (Edgar Thompson,and Sam Shockley) tried escaping a little after the "Battle of Alcatraz", but that resulted in their execution in the gas chambers of San Quentin penitentiary

The most famous escape was by Frank Morris

Attempted escapes