There is no single governing body. The sport runs on a few primary circuits and a wide bed of independent regional shows, and each rung has a different job.
The professional circuit
STIHL TIMBERSPORTS® Series
Founded in 1985 by STIHL, this is the sport's premier worldwide series: standardized rules across six core disciplines, regional US qualifiers feeding a national championship, a world championship, and televised broadcasts. If a competitor is a household name in this sport, this is the circuit that made them one.
stihl-timbersports.com →The oldest big show
Lumberjack World Championships
Held every July at the Lumberjack Bowl in Hayward, Wisconsin, and one of the oldest and most prestigious independent competitions anywhere. It draws lumberjacks and lumberjills from around the world, and it is the one that adds the water: log rolling, boom running, and speed climbing alongside the chopping and sawing.
lumberjackworldchampionships.com →The grassroots sanctioning body
American Lumberjacks Association
Sanctions regional events across the country, publishes standardized safety and competition rules, and tracks athlete points across grassroots circuits. For most working competitors this is where a season actually happens: county fairs, timber festivals, and regional shows running under ALA rules.
americanlumberjacks.com →The feeder system
Collegiate woodsmen teams
Dozens of universities — mostly forestry and agricultural schools such as Penn State, the University of Montana, Auburn, and NC State — field woodsmen teams that compete in intercollegiate meets. For a young athlete, joining a college woodsmen club is the single most common way into the sport.