Also out for Thursday night's big AFC East showdown with the New York Jets is starting defensive end Ty Warren, who has been limited all week with a groin injury and can't go on the slick Gillette Stadium turf.
Warren is second on the Patriots with 54 tackles. He also recorded both of his sacks over the past two games.
Thomas, who already had been ruled out with a forearm injury, leads the Patriots with five sacks.
But here's some good news for Patriots fans: Running back Sammy Morris is active after missing three games with a knee injury.
Here are the other inactives:
New England Patriots
New York Jets