Stacey Alleaume is a principal soprano for Opera Australia of Australian and Mauritian descent.

Alleaume's family came from Port Louis in Mauritius where her grandfather had been mayor and her grand-uncle curator of the opera house. She then grew up in the Melbourne suburb of Narre Warren and studied voice at the University of Melbourne and the Music Academy of the West in Santa Barbara.

In 2016 she became a member of the Opera Australia Moffatt Oxenbould Young Artist Program after winning the Dame Joan Sutherland Scholarship; in the same year she performed in a large scale "silent opera" (The Eighth Wonder in a headphones-only presentation) on the steps of the Sydney Opera House. Alleaume's voice was used in the 2021 feature film Falling for Figaro for the character Millie Cantwell.

In 2021 she stepped into the role of Violetta in La traviata for Handa Opera on Sydney Harbour at short notice. This performance was highly praised by critics. She reprised the role of Violetta for Welsh National Opera in 2023.

She has sung for Opera Australia, Australian Contemporary Opera Company, Opera Hong Kong, Fondazione Petruzelli, Royal Opera House Muscat, and Deutsche Oper am Rhein.