In addition to being a sitcom pioneer, she sang on television, in nightclubs, on recordings and on Broadway, where she won a Tony Award.
Diahann Carroll, who more than half a century ago transcended racial barriers as the star of “Julia,” the first American television series to chronicle the life of a black professional woman, died on Friday at her home in West Hollywood, Calif. She was 84.
Her publicist, Jeffrey Lane, said the cause was complications of breast cancer. Ms. Carroll had survived the cancer in the 1990s and become a public advocate for screening and treatment.
A situation comedy broadcast on NBC from 1968 to 1971, “Julia” starred Ms. Carroll as Julia Baker, a widowed nurse with a young son. The show featured Marc Copage as Julia’s son, and Lloyd Nolan as the curmudgeonly but broad-minded doctor for whom she worked. (“Have you always been a Negro or are you just trying to be fashionable?” he asks Julia in an audacious, widely quoted line from the first episode.)