The 2017 Clash of Champions was the second Clash of Champions professional wrestling pay-per-view (PPV) and livestreaming event produced by WWE. It was held exclusively for wrestlers from the promotion's SmackDown brand division. The event took place on December 17, 2017, at TD Garden in Boston, Massachusetts. As per the theme of the event, all championships exclusive to SmackDown at the time were defended. The event was replaced by Evolution in 2018, but returned in 2019.

Seven matches were contested at the event, including one on the Kickoff pre-show. In the main event, AJ Styles defeated Jinder Mahal to retain the WWE Championship. Of the four SmackDown-exclusive championships, only the United States Championship changed hands, with Dolph Ziggler defeating defending champion Baron Corbin and Bobby Roode in a triple threat match in the opening bout. In another marquee match, Kevin Owens and Sami Zayn defeated Randy Orton and Shinsuke Nakamura to keep their jobs in a match that featured both Shane McMahon and Daniel Bryan as the special guest referees.