William Dennis Gargan was an American film, television and radio actor. He was the 5th recipient of the Screen Actors Guild Life Achievement Award in 1967, and in 1941, was nominated for the Academy Award for Best Supporting Actor for his role as Joe in They Knew What They Wanted. He acted in decades of movies including parts in Follow the Leader, Rain, Night Flight, Three Sons, Isle of Destiny and many others. The role he was best known for was that of a private detective Martin Kane in the 1949–1952 radio-television series Martin Kane, Private Eye. In television, he was also in 39 episodes of The New Adventures of Martin Kane.

The Screen Actors Guild Life Achievement Award is presented by the Screen Actors Guild's National Honors and Tributes Committee for "outstanding achievement in fostering the finest ideals of the acting profession." It predates the 1st Screen Actors Guild Awards by over thirty years. The award's first recipient was performer and comedian Eddie Cantor, in 1962. Since then, it has been presented every year except 1963, 1981 and 2021. On two occasions, two people received the award the same year: in 1985, when it was presented to actor Paul Newman and actress Joanne Woodward, and in 2000, when it was presented to civil rights activists Ossie Davis and Ruby Dee. The award was not given in 2020 due to the COVID-19 pandemic. As of 2021, 59 people have received the award, of whom 39 are men and 20 women. Barbara Streissand was announced as the recipient for the 2023 award.