Born in Moscow in 1966. Studied in the studio of the artist Y.L. Langleiben 1978 -1981. In 1985 graduated from the Moscow Art College memory 1905 years. In 1991 was admitted into the Moscow Union of Artist. Alexander lives and works in Moscow.

Alexander Dedushev has participated in over 80 exhibitions in Russia and abroad. His works were displayed at the collective show in USA 2007; Germany and France 1993. Participated in the International Art fairs in Switzerland, Basel 1992; also Germany, Frankfurt 1993, Hong Kong 2018; Art Moscow 2004, 2005; Art Manege 1998-2008; Art Salon 1996-1999; and show in the Central House of Artist, Kuznezky Most exhibition hall, Manege, New Manege and various galleries. Since 1992 more 20 solo exhibitions were held in Moscow and Germany.

Artworks by Dedushev are in the collections of the Tambov Art museum, the collection Usadba Zubovih, Moscow; Eastern Gallery, Moscow; Hotel Estrel in Berlin; Gertsev Gallery , Moscow; in the private collection Manning Goodvin, London; and in other private collections of Russia, Germany, England, Belgium, France, USA...