Olga Erofeeva (Russian: Ольга Ерофеева; born 1985) is a Russian professional triathlete, 2011 National Elite Duathlon Champion, and National Aquathlon Vice-Champion of 2011.In the Russian Ranking for 2010, which is based upon various national and international events, Erofeeva's name is among the top twenty female triathletes although Erofeeva did not attend any of the Russian competitions and her result is due to the only ITU event of 2010 she took part in.In April 2011, Erofeeva had her international breakthrough. At the Volkswagen Aldiana Triathlon (Small States of Europe Championship, 27 March 2011) in Cyprus, where the Russian elite triathletes had their training camp, she won the silver medal on the sprint distance.Olga Erofeeva's name does not appear in any of the Russian Triathlon Federation's rankings for 2009 and she is not even a reserve member of the National Team.