Mariya Koroleva (born April 10, 1990) is an American synchronized swimmer. After emigrating to the United States as a child, Koroleva began participating in synchronized swimming events, and continued to compete after matriculating at Stanford University. She was a member of teams that won silver medals in the duet and team competitions at the 2011 Pan American Games in Guadalajara, Mexico. Together with teammate Mary Killman, Koroleva qualified for the 2012 Summer Olympics in London in the duet event.