John Felix Anthony Cena Jr. is one of five sons born on 23 April 1977 to John Cena Sr. and Carol Cena. Cena has a diverse background as he is English-Canadian through his mother and Italian through his father. Cena was raised as a Catholic and went on to attend a Catholic school, Central Catholic High School before he moved to Cushing Academy.

John Felix Anthony Cena was born on April 23, 1977 in West Newbury, Massachusetts to Carol Cena and John Joseph Cena. He is of Italian (father) and French-Canadian and English (mother) descent, and is the grandson of baseball player Tony Lupien.

John Felix Anthony Cena Jr. was born on April 23, 1977, in West Newbury, Massachusetts. His father, John Cena, Sr., is of Italian descent, while his mother, Carol, is of English and French Canadian origin and is the daughter of baseball player Tony Lupien. He is the second child of his parents and has four brothers; Dan, Matt, Steve, and Sean.