Rebecca Rosenblum (born May 23, 1978) is a Canadian author best known for her short stories.

She attended McGill University and received her Honours Bachelor of English in 2001, and in 2007 she graduated from the University of Toronto with a Master of Arts in English and Creative Writing.

Once was officially launched on September 15, 2008, by Canadian press Biblioasis.

[1] In February 2008, Rosenblum was announced as one of three finalists for the Writers' Trust of Canada/McClelland & Stewart Journey Prize, which is awarded annually to a new and developing writer of distinction for a short story published in a Canadian literary journal in the previous year.

In the summer of that year, Once was longlisted for the Relit Award, and her short story "Linh Lai" was a finalist for the Canadian National Magazine Awards.