He has Dutch, German, Italian, English, and smaller amounts of Welsh and Northern Irish (Scots-Irish), ancestry. His surname is Dutch ("De Haan" or "de Haan" means "The Rooster" in Dutch).
Graduated high school from North Carolina School of the Arts with a concentration in acting along with Hannah Telle, and Mary-Louise Parker.
Metallica preformed under his last name DeHaan in their Orion Festival, playing all of "Kill 'Em All", their first album. At the time of the show no one knew who 'Dehaan' was and as the word spread out, more and more people came to watch, not knowing the connection between Dane DeHaan and Metallica.
Has a sister named Meghann Carl.
Attended Emmaus High School.