A tie occurs when two or more individual or teams achieve identical results in the Olympics.
Ties occasionally occur during the games, and since medals are complicated to produce, the Olympic organising committee makes advance arrangements for extra medals to be produced in the event of a tie.
This list does not include events where two bronze medals are awarded due to repechage or the non-existence of a bronze-medal playoff as they are awarded due to the rules of the sports, thus not considered as ties.
In addition, two finals were held for one rowing event at the 1900 Olympics, men's coxed four.
This was due to a controversy about which boats should advance to the final; thus two separate finals were held, awarding two sets of medals for the same event, both which are considered Olympic championships by the International Olympic Committee.