Landry suffered a tear in his left hip flexor during a training camp practice recently and will have surgery to repair it Tuesday in Philadelphia.
Landry, 30, signed a four-year deal worth $26 million with Sacramento in the offseason. Landry also played for the Kings in parts of the 2008-09 and 2010-11 seasons.
Landry averaged 10.8 points and 6.0 rebounds in 81 games last season with the Golden State Warriors. In six NBA seasons, he has career averages of 11.9 points and 5.3 rebounds.