Marie Riou (born 21 August 1981) is a French sailor who competed in the 2012 Summer Olympics in the Elliott 6m class with Claire Leroy and Élodie Bertrand coming 6th overall.

[2] In The Ocean Race in 2023 she reached fourth place in the IMOCA 60 Biotherm skippered by Paul Meilhat.

Paul Meilhat's finishing crew were Riou, Mariana Lobato and Alan Roberts.

The voyage had taken six months and over a hundred days of sailing in seven legs.

[4] This biographical article related to sailing in France is a stub.