Ravens head coach John Harbaugh announced that Boldin is expected to miss the final two weeks of the regular season after undergoing surgery Thursday to repair a slight tear in his meniscus.
Harbaugh said Boldin should be able to return for the playoffs.
Boldin leads the 10-4 Ravens with 887 receiving yards on 57 catches this season.
Baltimore is tied with Pittsburgh for first place in the division. The Ravens, though, own the tie-breaker after beating the Steelers twice this season.