Amy Roberta (Berta) Ruck (2 August 1878 - 11 August 1978) was a romantic novelist, writing almost eighty novels over the course of her writing career as well as large numbers of short stories.
From 1905 Ruck began to contribute short stories and serials to magazines. Ruck published her first novel, His Official Fiancée in 1914. Ruck also wrote an autobiography and two memoir-style works.
Ruck was born in India, the daughter of an army officer and one of eight children. The family moved to Wales where Ruck went to school in Bangor. Ruck married novelist Oliver Onions in 1909 and they had two sons, Arthur (born 1912) and William (born 1913).