List of The Most Tragic Child Star Deaths That Stunned Hollywood. 25 Child Actors Who Died Young include some of the most recognizable names in entertainment. These 25 beloved young actors passed away far too soon. Our childhood stars who died young from Disney Star Cameron Boyce and teen idol River Phoenix to actress Dana Plato and singer, child actor, dog breeder and guide Carl Switzer. Some child actors mentioned here departed this world very young.