​The NFL has seen a youth movement among its coaching ranks in recent seasons, and the 2026 coaching carousel proved no different.A total of 10 teams replaced their head coaches during the 2026 NFL offseason. Three of those new hires are under 40 years old, making them among the youngest coaches in the league.That includes Buffalo Bills coach Joe Brady, who will now take the mantle of being the official youngest coach in the NFL. That title previously belonged to Kellen Moore, who was a rookie coach during the 2025 campaign, but Brady is almost a year and a half younger than Moore.So, who are the youngest coaches for the 2026 NFL season? Below is a look at the eight NFL coaches entering the 2026 campaign at age 40 or younger and what they have achieved so far in their coaching careers.Youngest head coaches in the NFL for 2026All ages as of the start of NFL season on Sept. 9, 2026.Joe Brady, Buffalo BillsAge: 36 (Sept. 23, 1989)Brady was an internal hire to replace Sean McDermott with the Bills after nine seasons. Brady spent four seasons in Buffalo’s organization and two-and-a-half seasons as the team’s offensive coordinator before being promoted to head coach.Before joining the Bills, Brady spent two seasons with the Carolina Panthers. However, his claim to fame came in 2019, when he helped lead LSU and Joe Burrow to a historic offensive season en route to winning a national championship as the team’s passing game coordinator.Brady led the Bills to a 36-31 win over the Houston Texans in his first game as the team’s coach and will hope that is a sign of things to come in his first season.Kellen Moore, New Orleans SaintsAge: 38 (July 5, 1988)Moore enjoyed a rapid coaching rise after a six-year career as a backup quarterback. The lefty first joined the Cowboys’ coaching staff in 2018 and was promoted to offensive coordinator the following year. He spent the next six seasons operating in that role for the Cowboys, Los Angeles Chargers and Philadelphia Eagles and won a Super Bowl on Nick Sirianni’s staff before being hired to take over the Saints.Moore led the Saints to a 6-11 record in his first season in New Orleans. However, the Saints improved as the season progressed and went 5-4 across Tyler Shough’s nine starts, inspiring hope Moore could turn the team into an NFC South contender with more time.Mike Macdonald, Seattle SeahawksAge: 39 (June 26, 1987)Macdonald’s reputation as a defensive wunderkind helped him earn the right to replace long-time coach Pete Carroll in Seattle. The results have been stellar, as the Seahawks posted a 24-10 record across Macdonald’s first two seasons in Seattle and won Super Bowl 60 thanks to his elite defensive tutelage.Macdonald will have designs on helping the Seahawks repeat as Super Bowl champions in 2026 which would only bolster his argument as the clear-cut, most successful branch of John Harbaugh’s coaching tree.Mike LaFleur, Arizona CardinalsAge: 39 (March 3, 1987)LaFleur was hired to be the Cardinals’ coach