Mariana Bracetti Cuevas (also spelled Bracety) (July 26, 1825 – February 25, 1903) was a patriot and leader of the Puerto Rico independence movement.

In 1868, she knitted the Grito de Lares flag that was intended to be used as the national emblem of Puerto Rico in its first of two attempts to overthrow Spanish rule, and to establish the island as a sovereign republic.

The revolutionists declared Puerto Rico a republic, swore in Francisco Ramírez Medina as its first president and celebrated a speedy mass.

The Spanish militia, however, surprised the group with strong resistance, causing great confusion among the armed rebels who, led by Manuel Rojas, retreated back to Lares.

The original Lares flag was taken by a Spanish army officer as a war prize and many years later returned to the Puerto Rican people.

[6] Eighty of the prisoners died in jail, Bracetti however, lived and was released on January 20, 1869, when the new Spanish Republican government granted them general amnesty.

Juan de Mata Terreforte, a revolutionist who fought alongside Manuel Rojas in the Grito de Lares, and who was the Vice-President of Puerto Rican Revolutionary Committee, a Chapter of the Cuban Revolutionary Party in New York City,[8] adopted Bracetti's "Flag of Lares" as the flag which represented Puerto Rico.