María Griselda Hinojosa Flores (20 April 1875 – 1959) was a Chilean pharmacist.

She became the first woman to practice pharmacy in the country after earning a degree from the University of Chile in 1899.

[2] She studied pharmacy at the University of Chile, graduating on 4 December 1899 with the thesis Contribución al estudio del Solanum Tomatillo (Natri) (Contribution to the Study of the Solanum Tomatillo).

[3][4] She was part of the first group of women to earn college degrees in Chile, following the promulgation of the Decreto Amunátegui [es] in 1877; others included physicians Eloisa Diaz (1886) and Ernestina Pérez (1887) and lawyers Matilde Throup (1892) and Matilde Brandau (1898).

[5] She practiced her profession at the Copiapó Apothecary and Drugstore until 1909, and at the Manuel Antonio Matta Pharmacy, located on the homonymous avenue [es] in Santiago, owned by Hinojosa and her husband.