David Blough is an American football quarterback for the Detroit Lions of the National Football League (NFL). He was Purdue's backup quarterback in 2015 and led the Boilermakers to a win against Nebraska. As a redshirt sophomore in 2016, he started 12 games and earned Academic All-Big Ten honors.

Blough was selected by ESPN.com as the thirty-fifth best high school quarterback. He signed with the Cleveland Browns as an undrafted free agent at the conclusion of the 2019 NFL Draft.

Following an injury to Lions starter Matthew Stafford and backup quarterback Jeff Driskel during the 2019 season, Blough assumed the starting role for the final five games of the Lions' 2019 season.

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