Viator, whose hiring was announced by ULM on Monday, went 78-33 during 10 seasons at McNeese State, coaching the Cowboys to the NCAA Division I Football Championship Subdivision playoffs five times.
He was named Southland Conference coach of the year for the third time after leading McNeese State to a 2015 regular season record of 10-0. The Cowboys then advanced to the second round of the FCS playoffs before falling to Sam Houston State, 34-29.
Viator replaces Todd Berry, who was ULM's coach from 2010 until his firing during this season, which the Warhawks finished with a record of 2-11.
AP college website: collegefootball.ap.org