Biff Elliot was born Leon Shalek in Lynn, Massachusetts, the son of Susan (née Bernstein) and Israel Shalek.^[2] He was the youngest of three brothers and his ancestors were Jewish immigrants from Eastern Europe.^[2][3]

Elliot, who had acted during his college years, abandoned writing to pursue television roles. He appeared in many important dramatic shows of the time, mostly playing tough, working-class characters. When Elliot was spotted by a Hollywood attorney while performing in a television episode, the attorney recommended him to Victor Saville, the producer who was preparing the first film adaption of Mickey Spillane's I, the Jury. After securing the part following a 15-minute audition, Elliot was brought to Hollywood and prepared for the role by reading Mike Hammer novels, often spending the entire night reading them. I, the Jury became Elliot's first leading film role, and he was the first actor to portray the Mike Hammer character in a film. Although Elliot was signed to a long-term contract as Mike Hammer, other actors were later cast in the role.^[4]

In 2004 Elliot recorded a commentary track for I, the Jury.^[5]

Over the next few years, Elliot became a prominent fixture in war films of the 1950s and 1960s, appearing in Between Heaven and Hell, The Enemy Below, Pork Chop Hill and PT 109. In 1959, playwright Clifford Odets, who had noticed Elliot in I, the Jury, offered him a role in The Story on Page One, which Odets wrote and directed. In the 1960s, Elliot appeared mostly in television, including appearance on Frank Lovejoy's detective series Meet McGraw and on Perry Mason. In 1961 Elliot played the part of Buddy Blue, a trumpeter on the run from a gangster, in the series 77 Sunset Strip. In 1966, he portrayed a government agent in an episode of the comedy series The Dick Van Dyke Show. In 1967, he appeared in the Star Trek episode "The Devil in the Dark". He guest-starred in an episode of Gibbsville in 1976. In 1977, he had a memorable supporting role in Telly Savalas's Beyond Reason with Diana Muldaur. In 1974, Elliot costarred in two episodes of the Planet of the Apes series, playing an orangutan in one of them. Elliot make his final film appearance in the 1986 film That's Life!. His last appearance on television was in 1986 on the set of the television series of Starman. Elliot retired in 2001. ^{[citation needed]}

Elliot died at his home in Studio City, California, on August 15, 2012, at the age of 89. He was buried in Westwood Village Memorial Park Cemetery.^[6]

• Official Website
• Biff Elliot at IMDb
• Biff Elliot at Memory Alpha
• Obituary