Isabelle Huppert

Note: I have also seen her live in three plays: Psychosis 4.48, The Maids, and Phaedra(s). I was supposed to see her in The Glass Menagerie, but when the pandemic struck I eventually saw it streaming (live).

For a complete list of my favorite actors:
https://mubi.com/en/lists/100-favorite-actors

Ranked.

La cérémonie (1995)
I Heart Huckabees (2004)
Coup de torchon (1981)
Abus de faiblesse/Abuse of Weakness
White Material (2009)
Coup de foudre /Entre Nous (1983)
Valley of Love (2015)
Eaux profondes (1981)
Elle (2016)
Marvin ou la belle...