Equestrian sport has been part of the Olympic Games since 1912.
Team and individual medals are awarded in three disciplines - Dressage, Eventing and Jumping.
Team USA holds the record for the greatest level of participation, with 236 horse and rider combinations competing throughout the history of the Games.
Team Germany has won the most medals, collecting a total of 75 to date.
The equestrian events of the Rio 2016 Olympic Games will be staged in the Deodoro Olympic Park alongside basketball, BMX, canoe slalom, fencing, hockey, modern pentathlon, mountain biking, rugby sevens and shooting.
The Deodoro Olympic Park is the second largest Olympic cluster of the Rio 2016 Games venues.
Jumping: 27 countries, 15 teams, 75 horse/rider combinations
Eventing: 24 countries, 13 teams, 65 horse/rider combinations
Dressage: 25 countries, 11 teams, 60 horse/rider combinations
The Rio 2016 sport entries (FEI Definite Entries) also include 34 reserve horses and 33 reserve riders. The Jumping rider Ferenc Szentirmai (UKR) is a competing athlete and also has a reserve horse.
The countries represented are:
Argentina, Australia, Austria, Belarus, Belgium, Brazil, Canada, Chile, China, Chinese Taipei, Colombia, Denmark, Dominican Republic, Ecuador, Egypt, Finland, France, Germany, Great Britain, Ireland, Italy, Japan, Korea, Mexico, Morocco, Netherlands, New Zealand, Palestine, Poland, Peru, Puerto Rico, Qatar, Republic of South Africa, Russia, Spain, Switzerland, Sweden, Turkey, Ukraine, Uruguay, USA, Venezuela and Zimbabwe.