Erecthée Bibiena Mélanie Marie "Bienna" Pélégry, later Boiteux (24 August 1899 – 18 January 1989),[1] was a French freestyle swimmer who competed in the 1924 Summer Olympics and in the 1928 Summer Olympics.

[2] She was the sister of Salvator Pélégry and the mother of Jean Boiteux.

In 1924 she was a member of the French relay team which finished fifth in the 4 × 100 metre freestyle relay competition.

Four years later she finished again fifth with the French relay team in the 4 × 100 metre freestyle relay event at the Amsterdam Games.

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