Draft horse showing (UK and Commonwealth; draught horse, dray horse or carthorse) refers to horse shows exclusively for horses of the draft horse breeds. In North America, though a small number of draft horses are also shown under saddle, the term "Draft horse showing" refers to a specific horse show competition that primarily features driving exhibitors presenting their horses to be judged in harness. Worldwide, some draft horse shows also feature riding classes.
The driving events at these competitions are somewhat akin to fine harness classes at horse shows for light horses, though the four horse and larger hitch classes also resemble some aspects of carriage driving. Draft horse shows are different from draft horse pulling competitions, where teams of horses compete to determine who can pull the most weight.