His parents did not support his decision to pursue a career in acting, preferring him to enter business. According to Hammer, his relationship with them became strained but he reconciled with them after he started getting starring roles.
He spent the better part of his formative years in the Cayman Islands after his father saw the movie, The Firm (1993) .
He plays the guitar.
Was set to play Bruce Wayne/Batman in a ''Justice League'' film under the direction of George Miller but the project was eventually canceled. He was consider by Warner Bros. for the part of Batman in Batman v Superman: Dawn of Justice (2016) which went to Ben Affleck.
Armie's paternal great-grandfather, Armand Hammer, was the son of Russian Jewish immigrants, Rose (Lipshitz) and Julius Hammer, from Odessa (then in the Russian Empire). Armie's ancestry also includes Russian, English, Northern Irish (Scots-Irish), Scottish, German, and 1/512 Cherokee Native American (through his paternal grandmother, Armie descends from Chief Kanagatucko, a Cherokee elder who lived in the 18th century).