Equestrian at the 1912 Summer Olympics

A total of 40 riders from 8 nations contested the jumping event, which consisted of a 15-obstacle, 29-effort course. It had a maximum height of 1.40 meters and width of 4.00 meters, and had to be completes a speed of 400 m/min. Individual and team competitions ran over the same course but were held separately. A maximum of 6 riders per country was allowed in the individual jumping event.

The dressage competition had 21 riders from 8 countries. It differed from the current format in that it did not include movements such as piaffe and passage but required five jumps up to 1.10 meters in height and a final obstacle: a barrel that had to be jumped while it was rolled towards the horse. Riders could garner bonus points for riding with one hand.

The eventing competition had 7 nations competing with a total of 27 riders. The team event had 3 or 4 riders per nation, who were required to be officers on army mounts. The format differed greatly from what is currently used, being held over 5 days. The first day was a 55 km endurance ride to be completed in 4 hours, which included a 5 km, 12-obstacle cross-country course to be completed in 15 minutes. On the second day the horses were rested before coming out on the third day for a 3500m steeplechase over 10 obstacles, to be completed in 5min and 50 seconds. The fourth day was a jumping test, over a 15-obstacle course with a maximum height of 1.30 metes and 3.00 meters in width. The final day held the dressage test. Each phase could garner up to 10 points.