Abraham's father is a Malayali, and his mother is a Parsi.
John Abraham was born on December 17, 1972, in Mumbai, Maharashtra, India. He grew up in a middle-class family. His father Abraham John is a Syrian Christian from Aluva, Kerala, India, and his mother Firoza Irani is from India's Parsi community. His father is an architect, and his mother is a homemaker and charity worker. Abraham has a younger brother named Alan Abraham, and also a sister Susy Mathew.
Abraham's Parsi name given to him by his mother's family is Farhan Irani. Being a Syrian Christian from Kerala, his father gave him a biblical name "John" as his first name, and Abraham as his last name from the Nasrani naming system by receiving the father's first name as a last name.