Elena Martínez Fontes (Buenos Aires, 12 January 1915 – 4 May 1989) was an Argentine biologist who specialized in marine invertebrates.

She went on to become a "Supernumerary Assistant" for the preparation and classification of material from the Protistology laboratory of the Argentine Museum of Natural Sciences.

Their collection of Antarctic marine algae is currently part of the Herbarium of the Bernardino Rivadavia Natural Sciences Argentine Museum.

[2] In 1969 the "Embassy of Women of America" awarded a commemorative medal to each member of the Expedition for being "the first female group that participated in an Antarctic Campaign to develop scientific tasks.

[1] On February 11, 2022, on the International Day of Women and Girls in Science, President Alberto Fernández led an act in which the Hall of Scientists of the Casa Rosada (seat of the executive power of the Argentine Republic) it was renamed as the Argentine Science Hall, making "the four of Melchior" part of the honored female figures.

[2] A photograph of Fontes was added to the gallery of images of the Hall together with those of 10 other women of science from Argentina: Elisa Bachofen, Eugenia Sacerdote de Lustig, Rebeca Guber, Sara Rietti, Elvira López, Telma Reca, Hetty Ladis Regina Bertoldi de Pomar, Irene Bernasconi, María Adela Caría and Carmen Pujals.