Hilaria del Rosario de Aguinaldo (born Hilaria del Rosario y Reyes; 17 February 1877 – 6 March 1921) was the first wife of General Emilio Aguinaldo, the first President of the Philippines.

Although the title "First Lady" (Spanish: Primera Dama) was not used, and did not refer to the wife of the President of the Philippines (being used only with the onset of the American governors-general in reference to their wives) at the time, she is today considered the first First Lady of the Philippines.

[citation needed] She complemented Emilio's military campaigns by caring for wounded soldiers and their families.

[citation needed] The organisation is considered a precursor of the present Philippine Red Cross, and for this she raised funds for medicines and other medical supplies.

[citation needed] Hilaria del Rosario de Aguinaldo died on March 6, 1921, aged 44, from pulmonary tuberculosis.