Oļegs Blagonadeždins (born 16 May 1973) is a Latvian former professional footballer who played as a defender.
From February to July 2012 Blagonadeždins managed the Latvian Higher League club Spartaks Jūrmala.
Prior to the 2014 Latvian First League season Blagonadeždins was appointed as the manager of AFA Olaine.
In mid-season he left, joining his previous club Spartaks Jūrmala to fulfill the role of the assistant manager.
For a short period of time in June 2014 Blagonadeždins worked as the care-taker at the club, fulfilling the manager's functions from the dismissal of Fabio Micarelli till appointment of Roman Pylypchuk.