A highly subjective survey of the horror films that have come out of France. I know there are more I’m leaving out, but I don’t think lists of hundreds of films are necessarily useful. Also, with the exception of Irreversible, I’ve stayed away from the new French Extremism.
Also notable, but not on MUBI:
Girl Slaves of Morgana Le Fay, Bruno Gantillon (1971)
Malefique, Eric Valette (2002)
Frontier(s), Xavier Gens (2007)
This is admittedly biased towards more recent films, since they’ve been easier for me to track down. Any recommendations on older films I’ve missed are more than welcome.