Hill is the No. 3-ranked player in Arkansas and No. 26-ranked wide receiver in the class of 2015, according to the recruiting website Rivals.com.
The 6-foot-1, 192-pounder drew scholarship offers from Auburn, Alabama, Florida, Ohio State and Oregon, among other programs.
Hill is the first wide receiver and 12th player in the class of 2015 to commit to the Razorbacks. Arkansas' 2015 recruiting class is ranked 31st in the country by Rivals.com.
The Razorbacks, who went 3-9 in 2013, open the season Aug. 30 at Auburn.
- Chris Johnson