Lynch rambled for 109 yards and a touchdown in the win, doing some of his best running as the Seahawks (3-6) controlled the ball for the game's final 6 minutes against Baltimore's top-ranked defense.
Lynch was also a receiving threat, compiling 58 yards through the air.
Joe Flacco racked up 255 passing yards with a touchdown on 29-of-52 efficiency but Ray Rice was limited to just 27 rushing yards on five carries for the Ravens (6-3).
Baltimore's Ed Dickson grabbed a pair of scoring strikes among his 10 catches for 79 yards.
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