Carl Ditterich (born 10 October 1945) is a retired Australian rules footballer who played for St Kilda and Melbourne in the VFL.
He also coached Melbourne for two years, as a playing coach.
Ditterich, known as the "Blonde Bombshell", made an impressive debut as a 17-year-old for St Kilda against Melbourne in the opening round of the 1963 VFL season, with his speed, high leaping and endurance noted.He became a tough ruckman and often appeared at the VFL Tribunal, in particular missing St Kilda's only premiership victory in 1966 through suspension.In 1973, he transferred to Melbourne under the VFL's short-lived "10-year rule, which allowed players with ten years' service at one club to move to another club without a clearance, before returning to St Kilda in 1976, due to his six-year deal being too expensive for Melbourne to continue.In 1979 he switched again to Melbourne to become their captain-coach for two years; during this period, the Demons suffered the worst defeat in VFL/AFL history, losing to Fitzroy by 190 points in Round 17, 1979.