Aydan Siyavus (15 May 1947 - 11 January 1998) was a Turkish basketball coach and former basketball player.
He coached a number of teams like Kadiköyspor, Eczacibasi, Efes Pilsen, Besiktas, Fenerbahçe, Çukurova, Darüssafaka, Karsiyaka and Galatasaray as well as the youth, junior's university and senior national teams.
He was the most successful head coach of the Turkish Super Basketball League.