Maryna Antsybor (born October 10, 1987 in Konotop) is a Ukrainian cross country skier who has competed since 2005. At the 2010 Winter Olympics in Vancouver, she finished 14th in the 4 x 5 km relay, 15th in the team sprint, and 37th in the 10 km events. Antsybor also competed in the 7.5 km + 7.5 km double pursuit event, but did not finish.
Her best finish at the FIS Nordic World Ski Championships was 12th twice in the 4 x 5 km relay (2007, 2009) while her best individual finish was 31st in the 30 km event at Liberec in 2009.
Antsybor's best World Cup finish was 19th at a 7.6 km event in the Czech Republic in 2008.