Rostislav Vítek (born 6 January 1976) is a Czech swimmer, who specialized in open water marathon.

Vitek competed as a lone open water swimmer for the Czech Republic in the inaugural men's 10 km marathon at the 2008 Summer Olympics in Beijing.

[2][3] Farther from the leaders by about eight body lengths, Vítek pulled away from the bottom of the field to drop beneath a 1:53 threshold for the seventeenth spot with a time of 1:52:41.8, about fifty seconds behind winner Maarten van der Weijden of the Netherlands.

[4] In 2009, Vitek successfully swam the English Channel at 7 hours, 16 minutes, and 25 seconds, which eventually became the fourth fastest solo single-crossing of all time.

[5] Because of his outstanding achievement and full commitment to the sport, he was nominated as 2009 World Open Water Swimming Performer of the Year.