Was born in 1966 in Tokmak of Zaporozhe region. In 1978 he finished The Tokmak Children’s Art School. From 1978 till 1984 attended Studio of Fine Art. From 1984 till 1988 studied at the Dnepropetrovsk State Art College named after Vuchetych Y.V. In 1991 he moved to Kirovograd. In 1995 graduated from the Kryvoi Rog Pedagogical Institute, Faculty of Art and Graphics.

Personal Exhibitions:

1993 – Kirovograd Art Salon

2003 – UMC head office, Kiev

2005 – joint exhibition with Andrey Kadygrob in Kirovograd City Art Memorial Museum of Osmyorkin O.O.

2009 – Kirovograd regional philharmonics

Artworks of Alexander Demidenko are exhibited in galleries of Prague. Participant of regional exhibitions. His works can be found in Kirovograd museums, in private collections in Ukraine, Russia, Poland, Czech Republic, Germany, Holland, France, Norway, China and USA. Alexander is a realist artist. His main theme is landscape. From 1996 till 1999 he worked as a teacher at the Kirovograd Institute of Regional Management and Economics on Faculty of Industrial Design. Since 2003 Demidenko is lecturing on Faculty of Arts of the Kirovograd State Pedagogical University named after Volodymyr Vynnychenko. He participated in the art open-air action “Kirovograd Land through Artists' Eyes” in Onufriyivskiy (2005) and Oleksandriyivskiy (2006) regions. In 2008 took part in All-Ukrainian Youth Art Open-air of Pokhitonov as curator.