Phyllis Ayame Whitney (September 9, 1903 – February 8, 2008) was an American mystery writer. Rare for her genre, she wrote mysteries for both the juvenile and the adult markets, many of which feature exotic locations. A review in The New York Times once dubbed her "The Queen of the American Gothics", although she hated this title. She preferred to say she wrote "romantic novels of suspense".
She was born in Japan to American parents and spent her early years in Asia. Whitney wrote more than seventy novels. In 1961, her book The Mystery of the Haunted Pool won an Edgar Award from the Mystery Writers of America for Best Juvenile novel, and she duplicated the honor in 1964, for The Mystery of the Hidden Hand. In 1988, the MWA gave her a Grand Master Award for lifetime achievement. Whitney died of pneumonia on February 8, 2008, aged 104.