Hellfest a anunțat line-up-ul pentru anul 2020. Ca în fiecare an peste 150 de formații vor urca pe scenele festivalului. Line-up: Faith No More, Deftones, System Of A Down, Incubus, Korn, Mastodon, Opeth, Deep Purple, Judas Priest, The Offspring, Infectious Grooves, The Darkness, Down, Obituary, Death DTA (the Death tribute featuring members of Death), At The Gates, Entombed AD, Sacred Reich, Devin Townsend, Meshuggah, The Black Dahlia Murder, Dying Fetus, Misery Index, Mayhem, Abbath, Rotting Christ, Primordial, The Great Old Ones, Wardruna, The Hu, Taake, Watain, Alcest, Borknagar, Gaahl’s Wyrd, Electric Wizard, Baroness, Om, Witchcraft, Black Mountain, Elder, ASG, Envy, Mono, John Garcia & the Band of Gold, High On Fire, Pelican, Killing Joke, Perturbator, Life of Agony, 3TEETH, Inter Arma, Body Count, Suicidal Tendencies, Youth of Today, Slapshot, Jesus Piece, Higher Power, Social Distortion, Anti-Flag, Agnostic Front, Reverend Horton Heat, Grade 2, Code Orange si altii.
Editia aniversara de 15 ani, ce va avea loc in perioada 19-21 iunie 2020 la Clisson.