The 2026 USL League One season is the eighth season of USL League One, a professional men's soccer league in the third tier of the United States league system.
Seventeen teams are participating in the 2026 season, playing 32 league games each. Five teams, Athletic Club Boise, Corpus Christi FC, Fort Wayne FC, New York Cosmos, and Sarasota Paradise, joined as expansion franchises. Texoma FC self-demoted to USL League Two after one season in League One, and Tormenta FC chose not to field a team for the 2026 season.
The regular season started on March 7. The 2026 season also includes the in-season tournament, the USL Cup. It features a group stage and knockout round between all 43 teams in the two professional USL leagues, the USL Championship and the USL League One.
One Knoxville are the defending league champions and Player's Shield winners.
This season's schedule is a "home-and-home" schedule, meaning each team will play every other team twice: once home and once away. The top eight teams at the end of the season will qualify for the playoffs.
All teams will once again compete in the USL Cup, along with the higher division USL Championship.