Mason Alan Dinehart
- Category : 1936-births
- Type : PSP
- Profile : 3/5 - Martyr / Heretic
- Definition : Single
- Incarnation Cross : RAX The Four Ways 1
American business consultant and retired actor best known for his role as a youthful Bat Masterson in thirty-four episodes between 1955 and 1959 of the ABC/Desilu television series The Life and Legend of Wyatt Earp. Dinehart's first acting role was uncredited as "Superman" at the age of twelve in the 1948 film Superman. Dinehart was the first actor on screen to play Superman. He played Superman as a boy diving into a haystack to recover his mother's lost ring, using his Xray vision to find it.
Dinehart's last screen appearance was as Bob Treadwell in the 1960 film Platinum High School. Dinehart's business career began around 1960 with Bank of America. He is now a consultant in litigation and arbitration for FEND, a company based in Los Angeles.
The Hollywood-born Dinehart was the only son of the actor Alan Dinehart and Dinehart's second wife, actress journalist, casting director and songwriter Mozelle Britton.
Mason Alan Dinehart has been married four times and has seven surviving children. A son, Scott Dinehart, died in 2010 of an emergency hip operation. He has two children each from his first and second marriages to Evelyn Myers (1954–1958) and Barbara Blakely (1958–1965), respectively. In 1982, he married for the fourth time; he and the former Miranda Gazal have four children.