Ralph Anthony Charles de Boissière (16 October 1907 – 16 February 2008) was an Trinidad-born Australian social realist novelist. Described as "an outspoken opponent of racism, injustice, greed and corruption, a passionate humanist with a vision of a just society", he was the author of four novels although most acclaimed for the first two: Crown Jewel and Rum and Coca-Cola, both originally published in the 1950s. A fifth novel called Homeless in Paradise remains unpublished.
Ralph de Boissière was born in Port of Spain, Trinidad, the son of Armand de Boissière, a solicitor, and Maude Harper, an English woman who died three weeks later. He attended Queen's Royal College and during this time discovered the Russian authors, Tolstoy, Turgenev, Gorky, Chekhov, Pushkin and Gogol, who were to remain a lasting influence:
Initially he wished to become a concert pianist but on leaving school took a job as a salesman, which enlightened him to the living and working conditions of ordinary Trinidadians. He then became involved in left-wing and trade union politics, campaigning as well as writing. A story of his, "Booze and the Goberdaw", appeared in the 1929 Christmas issue of a short-lived publication called Trinidad, edited by Alfred Mendes and C. L. R. James. De Boissière became part of the group of young writers, including James, who published in Trinidad's first literary magazine The Beacon (March 1931–November 1933), edited by Albert Gomes.
In 1935 he married Ivy Alcantara (died 1984) and they had two daughters. But in 1947, having lost his job and unable to find another one because of his political activities, he and his family left the country for Chicago, afterwards moving to the Australian city of Melbourne in 1948. He found work in Australia as salesman and a factory-hand. Aged 42, de Boissière settled into a clerical job, from which he retired in 1980.