Festival dijadwalkan dari 16 Jun hingga 19 Jun 2011 (3 hari).
Hellfest berlangsung di Clisson, France. Berikut adalah alamat lengkap festival: Rue du Champ Louet 44190 Clisson, France
Scorpions, Judas Priest, Ghost, Ozzy Osbourne, Opeth, Apocalyptica, Alter Bridge, In Flames, Cradle of Filth, The Black Dahlia Murder, The Cult, Meshuggah, Kreator, Architects, Black Label Society.
Genre dan sub-genre yang paling populer dari edisi sebelumnya adalah:
heavy metal
rock
punk
metal
death metal
thrash metal
hardcore
hard rock
black metal
progressive metal
metalcore
doom metal
alternative
stoner rock
experimental
hardcore punk
stoner
stoner metal
progressive