The Ravens have reached an agreement on a two-year, $3.55 million contract with
The deal was finalized late Friday.
Spears is a 2005 first-round draft pick from LSU, selected 20th overall by the Cowboys.
He was cut this year after signing a five-year, $19.2 million contract in 2011.
Spears, 30, has 226 career tackles and 10 sacks with three forced fumbles. Last season, he had 25 tackles and a sack in six starts.
Ravens general manager