Jean-Michel Cohen (born 22 May 1959) is a French nutritionist and author, best known for the Parisian Diet.

He wrote his first book, Savoir Maigrir (Know How to Lose Weight), published by Groupe Flammarion, in 2002.

In 2004, Cohen was awarded the French National Order of Merit for his contributions in implementing a nutritional label system in France.

[3] Pierre Dukan, the diet's founder, sued Cohen for libel, but lost the case.

[4] In 2012, Cohen released his first book in English, The Parisian Diet: How to Reach Your Right Weight and Stay There, along with its online version.