As a freshman with the Braves last season, Cunningham averaged 7.9 points and 7.5 rebounds while shooting 43.4 percent from the field.
He'll have three years of eligibility remaining after sitting out next season in accordance with NCAA rules.
Cunningham was rated the No. 88 player in the class of 2014, according to Rivals.com.
Dayton has won 53 games over the past two seasons and reached the NCAA Tournament in both 2014 and 2015.