The Netherlands boycotted the 1956 Summer Olympics in Melbourne, Australia because of the participation of the Soviet Union, who invaded Hungary during the USSR's invasion of Hungary. However, the equestrian events for the 1956 Games were held in Stockholm, Sweden five months earlier (because of Australian quarantine regulations), and one Dutch rider competed.

• The Official Report of the Organizing Committee for the Equestrian Games of the XVIth Olympiad (PDF). Swedish Equestrian Federation. Retrieved 2006-11-10.