John Gray is an American lecturer, author, and relationship counsellor.

His other popular books include The Mars & Venus Diet and Exercise Solution, Mars and Venus On A Date, Mars and Venus in the Bedroom: A Guide to Lasting Romance and Passion, What You Feel You Can Heal, Mars and Venus in Love, Men, Women and Relationships, and Mars and Venus in the Workplace.

Born in 1951, John Gray attended the University of Texas and the University of St. Thomas. He completed his doctorate at Columbia Pacific University, and even explored the Science of Creative Intelligence under Maharishi Mahesh Yogi. Apart from writing books, he also works as a family therapist. He is a member of the International Association of Family and Marriage Counselors and the American Counseling Association. He married his wife Bonnie in the year 1986, and they have three children.