Nikola Mirotic was voted the 2012 Rising Star by a panel of Euroleague head coaches.
Mirotic becomes the first two-time winner, having also captured the award for the 2010-11 season.
The Rising Star award recognizes the best Euroleague player who was under the age of 22 at the start of the season. Past winners include Andrea Bargnani, Rudy Fernandez and Danilo Gallinari.
The Chicago Bulls acquired the draft rights to Mirotic in a 2011 draft-day trade with the Minnesota Timberwolves.