On June 15, 2015, Davis signed a two-year contract extension. In 2015, Davis changed the back of his jersey from "Davis" to "Davis Sr" at the request of his son. Davis continued his outstanding play during the start of the 2015 NFL season, recording 25 tackles, 1 interception, and 1 forced fumble through just the first three games. The next week against the Tampa Bay Buccaneers Davis recorded 11 tackles and 1 interception in a 37-23 victory. Davis played very well during the Panthers Sunday Night victory over the Philadelphia Eagles recording a season high 13 tackles. Through the first 15 weeks of the 2015 NFL season, Davis set career highs in sacks (5.5) and interceptions (3). For his efforts, Davis was named to the 2016 Pro Bowl, a rare honor to an outside linebacker in a 4-3 defense. Davis finished the regular season with 105 total tackles, 5.5 sacks, and 4 interceptions. He was named to the AP All-Pro First Team. During the Divisional Round Playoffs, another showdown against Seattle, Davis secured the Panthers win by catching the Seahawks onside kick attempt with 1:12 left in the game, sending the Panthers into the NFC Championship Game. It was Davis' second onside kick recovery of the season, the first coming against the Dallas Cowboys Thanksgiving night game. Davis returned to the NFC Championship game for the first time since his rookie season in 2005, the only active Panther to have played in both conference championship games. Davis was knocked out of the conference win in the second quarter with a broken arm, and finished the game with six tackles. He vowed to return for the Super Bowl and went into surgery early the following morning on the arm to uphold that promise. Davis played in Super Bowl 50. In the game, he recorded seven tackles, but the Panthers fell to the Denver Broncos by a score of 24–10. According to Pro Football Focus, Davis had the second-highest coverage grade of any linebacker in the NFL behind only teammate, Luke Kuechly. He was ranked 54th on the NFL Top 100 Players of 2016.