Marianna Lymperta

Marianna Lymperta (, born June 25, 1979) is an Olympic and national-record holding swimmer from Greece. She has won the bronze medal at the 2011 World Aquatics Championships, at the Open Water Swimming Women's 10 km event. She has also won the bronze medal at the 2010 European Aquatics Championships, at the Open Water Swimming Women's 5 km event.

She has swum for Greece at the:
 * Olympics: 2000, 2004, 2008, 2012
 * World Championships: 2003, 2009, 2011, 2013
 * European Championships: 2010
 * Mediterranean Games: 2001, 2005, 2013
 * Open Water Worlds: 2008, 2010

At the 2010 European Championships, she set the Greek Records in the women's 800 and 1500 free (8:34.81 and 16:20.11).

At the 2012 Summer Olympics, she competed in the Women's marathon 10 kilometre, finishing in last place.