Festival dijadwalkan dari 15 Jun hingga 18 Jun 2023 (3 hari).
Hellfest berlangsung di Clisson, France. Berikut adalah alamat lengkap festival: Rue du Champ Louet 44190 Clisson, France
Slipknot, Iron Maiden, Mötley Crüe, Def Leppard, Machine Gun Kelly, KISS, Motionless in White, Within Temptation, Amon Amarth, Papa Roach, Powerwolf, Arch Enemy, Alter Bridge, In Flames, Asking Alexandria, Parkway Drive, Incubus, I Prevail, Coheed and Cambria, Pantera.
Genre dan sub-genre yang paling populer dari edisi sebelumnya adalah:
rock
heavy metal
punk
metal
death metal
hardcore
alternative
metalcore
hard rock
alternative rock
black metal
progressive metal
thrash metal
experimental
post-hardcore
doom metal
alternative metal
hardcore punk
melodic death metal