Yurcich, 37, spent two seasons at Division II Shippensburg (Pa.) as offensive coordinator after five seasons filling the same role at Edinboro University.
He'll be Oklahoma State's third offensive coordinator in four seasons after Dana Holgorsen (West Virginia) and Todd Monken (Southern Miss) left the Cowboys to accept head-coaching jobs.
Yurcich helped Shippensburg rank first nationally among Division II schools in total offense and second nationally in scoring offense at more than 46 points per game. His offense also led the nation in passing yards at 387.7 yards a game.
"I am excited to continue the offensive firepower that has been in place at OSU for many years," Yurcich said in a statement. "I've often admired the OSU system and I'm looking forward to learning and then teaching the Oklahoma State offense."