Since childhood, the future actor was fond of horse riding. As a teenager I went to the sambo and boxing section. Especially Alexander loved football. Having made a career in Moscow, he was in the football club movie star "Serial". In this team, the Guild of Cinema Actors of Russia played: Boris Klyuev, Igor Starygin, Sergey Varchuk, Mikhail Mamaev, Alexander Pyatkov, Yuri Chernov and many other famous actors. The actor was killed in a car accident in the late evening of November 3, 2007 with his wife Svetlana Chernyshkova and son Dmitry near the village of Noviy Omutishchi (Petushinsky district, Vladimir region, Russia). He was buried together with his family at the Troekurovsky cemetery in Moscow (station number 6). In the autumn of 2009, a monument was erected at the grave of the Dedushko family at the Troekurovsky cemetery. It consists of three steles of black granite, with film frames engraved on them and the portraits of Alexander Dedushko, his wife, Svetlana Chernyshkova and their son Dmitry, inserted into them.