Zelda Popkin (née Feinberg; 5 July 1898 – 25 May 1983) was an American writer of novels and mystery stories. She created Mary Carner, one of the first professional female private detectives in fiction. Carner was a store detective who appeared in five novels.
Zelda Popkin was married to Louis Popkin, and together they ran a small public relations firm until his death. They had two children, Roy and Richard.
Popkin's most successful book was The Journey Home, published in 1945, which sold nearly a million copies. Small Victory, published in 1947, was one of the first American novels with a Holocaust theme, and Quiet Street (1951) was the first American novel about the creation of the state of Israel.
She also wrote an autobiography, Open Every Door (1956), chronicling her childhood, life with her husband Louis Popkins, and life after his death. Herman Had Two Daughters (1968), a novel about two young Jewish women growing up in a small Pennsylvania town, is also largely autobiographical.