Marlène Olivia Nidecker (born 22 October 1986) is a Canadian-born French taekwondo Olympic medalist, Knight of the National Order of Merit decorated by the President of France, MBA graduate with Honors from the International University of Monaco and sports patron.

She returned to Canada after a year and put her premature career on hold, until Myriam Baverel invited her back to the CREPS Aix-en-Provence in 2006.

[2] While in France, she trained and studied, earning a certificate in physical education and a master's degree (bac+4) in sport management, but could not compete professionally because her French citizenship was still pending.

[4][5] In 2014, she founded the Fondation Heart Angel in Abidjan, Ivory Coast to promote education, culture and sports in West Africa.

The foundation supported the athletes Cheick Cissé and Ruth Gbagbi who won historic medals for their country at the 2016 Rio Summer Olympics.

Nidecker is also the founder and president of the Caravan for Peace, a humanitarian action supported by athletes such as Didier Drogba, Ladji Doucouré and Daba Modibo Keita.