Charles Spencer Chaplin III (May 5, 1925 – March 20, 1968), known professionally as Charles Chaplin Jr., was an American actor. He was the eldest son of Charlie Chaplin and Lita Grey, and is known for appearing in 1950s films such as The Beat Generation and Fangs of the Wild.

Chaplin was born in Beverly Hills, California. He was the elder son of actors Charlie Chaplin and Lita Grey. His half-siblings from his father's last marriage to Oona O'Neill are Geraldine, Michael, Josephine, Victoria, Eugene, Jane, Annette, and Christopher. His elder half-brother, Norman, died as an infant.

As young children, he and his younger brother, Sydney, were used as pawns in their mother's bitter divorce from Charlie Chaplin, during which a lot of the couple's "dirty linen" was aired in public, sensational divorce hearings.^[1] Following the divorce, the brothers were raised by their mother and maternal grandmother until the mid-1930s, when they began to make frequent visits to their father.

Chaplin attended the Black-Foxe Military Institute in Hollywood and the Lawrenceville School in Lawrenceville, New Jersey. He served in the U.S. Army in Europe during World War II.

Chaplin acted in 13 films, appearing with his father in Limelight (1952). In 1959, he had a role in the film Girls Town which featured the son of another famous silent movie comedian, Harold Lloyd Jr. He appeared with his brother Sydney in the play Ethan Frome at the Circle Theatre, now named El Centro Theatre. In 1960, he wrote a book about his family life titled My Father, Charlie Chaplin.

Chaplin died of a pulmonary embolism on March 20, 1968, in Santa Monica, California, aged 42. He is buried in the Abbey of the Psalms mausoleum at the Hollywood Forever Cemetery with his maternal grandmother Lillian Carrillo Curry Grey.

In the 2022 Netflix film Blonde, Chaplin was portrayed by Xavier Samuel.^[2]

• Limelight (1952) as Clown (uncredited)
• Columbus Discovers Kraehwinkel (1954)
• High School Confidential (1958)
• Girls Town (1959)^[3]