Athletes who competed in both the Summer and Winter Olympics in different sports
==Athletes who competed in both the Summer and Winter Olympics in the same sport==
Uncertain athletes
The next 25 athletes have an uncertain status: they have not participated at one (or more) of 2 or more sports but their appearance in the Olympic official website is considered official. Some of them have been already included in the list above. There are also some contrasts between Olympedia and the Olympics official website regarding the number of appearances. Sports and years in bold are those sports and years that are considered as official in the Olympics website or Olympedia but the athletes haven't participated in those years at those sports (or 1 out of more times). ==Notes==