The men's triathlon was an artistic gymnastics event held as part of the gymnastics programme at the 1904 Summer Olympics.

It was the only time the event was held at the Olympics.

One hundred and nineteen gymnasts from three nations competed.

Each gymnast performed two compulsory routines and one optional routine on each apparatus, with the compulsory routines split between the two versions of the horse and the optional horse routine being on the side horse.

Scores from this event, as well as the athletics triathlon event, were used to determine final scoring in the gymnastic all-around event.