Larry Kert (1930-1991) was an American actor, singer, and dancer.

He was born Frederick Lawrence Kert on December 5, 1930 in Los Angeles, California. His first professional credit was in a Broadway revue called Tickets, Please! (1950), as a member of a theatrical troupe called the Upstarts . After the seven-month run, he worked sporadically until 1957, when he was cast as Tony in the Arthur Laurents-Leonard Bernstein-Stephen Sondheim musical West Side Story, a modernized adaptation of Romeo and Juliet set in upper Manhattan. According to Laurents in his memoir Original Story By, director-choreographer Jerome Robbins frequently clashed with Kert, publicly chastising him for being a "faggot," despite the fact that Robbins himself and most of the creative team was gay.

For several years, Kert experienced a streak of seriously bad luck. A Family Affair limped along for three months in early 1962. He was a member of the cast of the infamous ill-fated musical version of Truman Capote's novella, Breakfast at Tiffany's, which closed during previews in December 1966. His next project, La Strada (1969), closed on opening night.

His big break came at the expense of another actor. Dean Jones, better known for his roles in Disney films than he was as a musical performer, had been cast as the lead in Sondheim's Company (1971), but clearly wasn't capable of handling the demands of a eight performances a week. Soon after opening night (and mediocre reviews), he was replaced by Kert; the critics returned a second time and raved about his dynamic performance. So acclaimed was he that the Tony Awards nominating committee that year allowed him to compete as Best Actor in a Musical, an honor usually allowed only for the performer who originates the role.

Unfortunately, the original cast album had already been recorded, and it was Jones who was heard on the release. When Sony Music released a newly-digitalized CD version in 1998, Kert's rendition of "Being Alive," the show's final number, was included as a bonus track.

Kert never achieved the growing and ongoing success his stint in Company suggested he was destined to enjoy. In 1975, he appeared in A Musical Jubilee , a revue that lasted barely three months. Rags (1986) closed two days after it opened, and in his final show, Legs Diamond (1988), he was merely a standby for star Peter Allen, not even having the opportunity to play a secondary role, as is usually the case with standbys and understudies.

Kert died on June 5, 1991 in New York City from AIDS-related complications.