The 2019 Appalachian State Mountaineers football team represented Appalachian State University during the 2019 NCAA Division I FBS football season. The Mountaineers were led by first-year head coach Eliah Drinkwitz through the team's win in the Sun Belt Conference Championship Game, after which he left to fill the head coaching vacancy at Missouri. Shawn Clark led the team during their bowl game appearance. Appalachian State played their home games at Kidd Brewer Stadium on the school's Boone, North Carolina, campus, and competed as a member of the East Division of the Sun Belt Conference.
The Mountaineers signed 18 recruits.
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