Mered de Vries (born 25 September 1977) is a retired Dutch professional beach volleyball and indoor volleyball player born in the small village of Harich in Friesland.
De Vries played seven seasons at Dutch highest league participants AMVJ before she moved to Italy to play for Asystel Milan and Busto Arsizio.
She started her international beach volleyball career in 2001 and teamed up with Elske van Diepen.
During the years 2002, 2003 and 2004, de Vries teamed up with six different players without hardly making any progress.
In 2007, Sanne Keizer and Mered de Vries split up with Marrit Leenstra and Patricia Labee and started playing together.