The Titans announced the deal Friday, hours after signing Pro Bowl left tackle Taylor Lewan to a five-year contract.
Walker has played in three straight Pro Bowls and was the game’s MVP in January. Now 33, Walker is entering his 13th season and sixth with Tennessee.
Since 2013, Walker has 356 catches for the most in the NFL by a tight end. Only Rob Gronkowski and Greg Olson have had more than his 4,156 yards receiving in that span.
Walker led the Titans with 74 catches for 807 yards last season, his fourth straight with more than 800 yards.
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