Dalton, who drew scholarship offers from Virginia Tech and Duke, among other programs, is the No. 4 weakside defensive end and No. 69 player in the class of 2015, according to rankings on the recruiting website Rivals.com.
The 6-foot-6, 220-pound senior is the 15th player and second defensive lineman -- joining three-star defensive tackle Aaron Crawford -- in the class of 2015 to commit to the Tar Heels.
North Carolina's 2015 recruiting class is ranked No. 22 in the country, according to Rivals.com.