Otto-Ernst Flick (1916-1974) was the oldest of three sons born to Marie and Friedrich Flick in 1916 in Germany.
He entered the Friedrich Flick Industry Holding Company in 1953, but had a fall-out with his father in about 1960. Otto-Ernst took his father to court to secure his inheritance, and after a prolonged struggle, received a payment for settlement. He retired in Düsseldorf and died 1974. His surviving brother, Friedrich Karl Flick gained full control of the business after he paid out the children of Otto-Ernst.