Mathieu Asselin (born 25 June 1973) is a French-Venezuelan photographer artist specializing in documentary photography and portraiture related to social issues.

In 2017 his book Monsanto: A Photographic Investigation, "a powerful indictment of corporate power and ecological irresponsibility",[1] won the Paris Photo-Aperture Foundation First PhotoBook Award and was a finalist for the Deutsche Börse Photography Prize.

Asselin began his career working on film productions in Caracas, Venezuela[2] and then as a photographer in Europe.

[4] In 2011 Asselin photographed Occupy Wall Street protestors in Zuccotti Park, using a small open-air studio.

[9][1][10] Sean O'Hagan, writing in The Guardian, described it as "a powerful indictment of corporate power and ecological irresponsibility",[11] "a book about corporate impunity that unfolds through the deft interweaving of Asselin’s own images and a wealth of found material, from personal testimonies to courtroom files.