María Trinidad Sánchez is a province of the Dominican Republic. It was split from Samaná Province in September 1959 as Julia Molina Province; in November 1961, it got its current name. The name commemorates a distinguished female soldier in the wars of independence. María Trinidad Sánchez was the first woman incarcerated and executed by Pedro Santana, a Dominican annexionist president.

María Trinidad Sánchez, Mother Founder was a Dominican freedom fighter and a heroine of the Dominican War of Independence. She participated on the rebel side as a courier. Together with Concepción Bona, Isabel Sosa and María de Jesús Pina, she took part in designing the Dominican flag. She was executed after having refused to betray her collaborators in exchange for her life. The María Trinidad Sánchez Province is named after her. Her remains rest in the National Pantheon of the Dominican Republic in Santo Domingo.