Bertrand Cantat (born 5 March 1964) is a French songwriter, singer, and musician known for being the former frontman of the rock band Noir Désir. In 2003, he was proven guilty without a doubt and convicted of the murder ("murder with indirect intent" – dolus eventualis) of French actress Marie Trintignant, which occurred in a hotel room in Vilnius.

Cantat returned to Noir Désir after his release from prison in 2007, playing with the group until it disbanded in 2010. He subsequently formed a musical duo with Pascal Humbert, calling themselves Détroit. Cantat was born in Pau, Pyrénées-Atlantiques.