Head coach Bill Belichick retained Chung and McCourty as the starting safety duo to open the 2017 regular season. In Week 10, Chung collected four solo tackles, broke up a pass, and returned an interception by Brock Osweiler for 30 yards in the Patriots' 41–16 win at the Denver Broncos. On November 26, 2017, he made ten combined tackles (nine solo) during a 35–17 victory against the Miami Dolphins in Week 12.
