Gilberte Mortier (12 March 1907 – 18 January 1991) was a French freestyle swimmer.
Mortier competed in the 1924 Summer Olympics.
In 1924, she was a member of the French relay team which finished fifth in the 4 x 100 metre freestyle relay competition.
In the 400 metre freestyle event, she was eliminated in the first round.
This biographical article related to a French swimmer is a stub.