The top-ranked dual-threat prospect and No. 20 overall recruit on ESPN 300 picked the Hurricanes over Texas A&M and Auburn, among others.
"When I do get there, I’ll be the only dual threat there, looking to come in and kind of win over a team," Brown said, according to David Wilson of the Miami Herald. "Get ready to bring back that Miami swagger back down in South Florida.
"You're going to get a really good competitor, a leader, a guy that doesn't like losing, and dominating the state of Florida, dominating the conference and hopefully win a natty, and, for me, just win a Heisman."
Brown starred for two seasons at Lowndes in Valdosta, Georgia.
The 6-foot-4, 205-pounder threw for 1,537 yards and 14 touchdowns against seven interceptions last season, adding 1,101 and 16 scores on the ground. Brown racked up 1,500 rushing yards, 1,300 passing yards, and 30 total touchdowns in 2019.
The four-star quarterback could be the successor to D'Eriq King, who is entering his final season of eligibility.
Fellow four-star defensive tackle Brandon Cleveland is the only other current member of the Hurricanes' 2022 recruiting class.