A native of Pembroke Pines, Florida, Harris has three seasons of eligibility remaining.
The 6-foot-8, 220-pound forward was highly productive in his debut season for the Ospreys in the ASUN.
Harris started all 30 games he appeared in and averaged 13.4 points and 7.1 rebounds in 22.5 minutes per game. He shot 55.7 percent from the field, 33.3 percent on 3s and 69.5 percent from the free-throw line.
He is the second North Florida player to commit to Indiana this spring, joining wing Jasai Miles.
Harris was named to the ASUN All-freshman team after grabbing 10 or more rebounds on four occasions and scoring in double figures 17 times.