Simpson takes over No. 76 for the second time in Baltimore after wearing the same number in his first stint with the team. Smythe takes over No. 80 from Isaiah Likely, who departed to the New York Giants this offseason.
Hawkins' No. 21 jersey has previously been worn by Ravens cornerbacks Chris McAlister, Lardarius Webb, and Brandon Stephens. It was donned by safety Sanoussi Kane last season.
The Ravens previously announced that Trey Hendrickson will wear No. 91, as he did in Cincinnati.