约翰·坎特威尔是一名演员，因为作品律政俏佳人 (2001), 爱情无限谱 (2008) and friEnD ADd 6 (2018)而被大众所熟知。
"Blondie" lead singer and actress Debbie Harry's signature is tattooed on Cantwell's right shoulder. In 1995 for his birthday, Ms. Harry was invited to a NYC tattoo parlor, where she signed several autographs for John, one of which was tattooed on his arm. A section in Cathay Che's 1999 biography of Debbie, "Platinum Blonde", is devoted to this meeting.