Stallworth and two other interns will be employed the team until the end of training camp.
Stallworth played one season for the Ravens in 2010, catching two passes for 82 yards and no touchdowns. His season was derailed by a broken foot.
It was Stallworth's first season back in the NFL after being reinstated by NFL commissioner Roger Goodell following a yearlong suspension; he served 24 days of a 30-day sentence for a driving under the influence-manslaughter charge in Florida.
Stallworth won the Ravens' Ed Block Courage award in 2010, voted on by his teammates.
Stallworth, 33, has been out of the NFL since the 2012 season, when he played one game for the New England Patriots.
A 2002 first-round draft pick from Tennessee, Stallworth played for the New Orleans Saints, Philadelphia Eagles, Cleveland Browns, Ravens and the Washington Redskins in his career. He has 321 career receptions for 4,837 yards and 35 touchdowns in 11 seasons.
The Ravens' other coaching interns are Richan Gaskins (Gallaudet) and Tsuyoshi Kawata (Stanford).
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