Armand Douglas Hammer was born in Los Angeles, California, to Dru Ann (Mobley) and Michael Armand Hammer, a businessman. His great-grandfather, Armand Hammer, was a prominent tycoon and philanthropist who ran the company Occidental Petroleum for many decades. Armies ancestry includes Russian-Jewish, English, Scots-Irish, and German. He has a younger brother, Viktor Hammer (Armie and Viktor share the same first names as their great-grandfather and his brother). His father is chairman and CEO of the Armand Hammer Foundation, where his mother is a board member. His parents also serve together on the boards of the Los Angeles Dream Center and Knoedler & Hammer Galleries in New York. In addition, his father is a member of the board of trustees for Oral Roberts University, and his mother, a former bank loan officer, teaches Bible study in Los Angeles.