The 2018 American Ultimate Disc League season was the seventh season for the league. The Madison Radicals won the championship, the team's first. Rowan McDonnell of the DC Breeze won league MVP after the season.
The Vancouver Riptide was the lone team to cease operations after 2017, with plans to move the team to Portland, Oregon and rejoin the league for the 2019 season. Stadium joined the AUDL as broadcast partner, replacing Eleven Sports Network. Stadium televised one game a week live as well as all three games during Championship Weekend VII.
Championship Weekend VII was held in Madison, Wisconsin at Breese Stevens Field from August 11-12, 2018.
The Madison Radicals won their first championship, and did so in front of a home crowd.