Terms of the deal were not disclosed.
Also, Rob Demovsky of the Green Bay Press-Gazette reports the Seahawks have signed offensive tackle Breno Giacomini off of the Green Bay Packers practice squad. And the team has signed former Packers lineman Allen Barbre.
To make room for the three new players, the Seahawks have released fullback Quinton Ganther and offensive linemen Mansfield Wrotto and Mike Gibson.
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The 34-year-old Stokley was placed on inured reserve with a groin injury by the Denver Broncos on Sept. 4 and later reached an injury settlement with the team. Stokley had played for Seattle offensive coordinator Jeremy Bates while in Denver, serving as a slot receiver who did a nice job working the middle of the field, particularly in third down situations.
Wide receiver Mike Williams suffered an injured shoulder during Sunday's game against San Diego, and head coach Pete Carroll did not say if he would be available on Sunday. So with Stokley in the fold, the Seahawks apparently will juggle their depth at receiver.
Stokley finished with 108 passes for 1,490 yards and 12 touchdowns in three seasons in Denver.
He has 307 receptions for 4,319 yards and 34 touchdowns over a 12-year career in the league.