Barbara Jezeršek (born October 31, 1986) is a Slovenian cross country skier who has competed since 2003. At the 2010 Winter Olympics in Vancouver, she finished 15th in the 4 x 5 km relay, 17th in the 7.5 km + 7.5 km double pursuit, and 41st in the 10 km events.
At the FIS Nordic World Ski Championships 2009 in Liberec, Jezeršek finished 44th in the 30 km, 49th in the 7.5 km + 7.5 km double pursuit, and 65th in the individual sprint events.
Her best World Cup finish was ninth in a 4 x 5 km relay event at Norway in November 2009 while her best individual finish was 34th at a 10 km event in Canada in February 2010.