Francisco Javier Santamaría (September 10, 1886 in Cacaos in Jalapa Municipality, Tabasco – March 1, 1963 in Veracruz, Veracruz) was an influential Mexican writer and politician who is best remembered for his contributions to the study of Mexican literature and lexicography; he variously worked or published as a bibliographer, essayist, geographer, journalist, judge, lawyer, lexicographer, linguist, naturalist, pedagogue, philologist, and poet. He also served as a Senator of the Republic and as Governor of the State of Tabasco.
Francisco Javier Santamaría was born in 1886 in the ranchería of Cacaos, to a criollo family of modest means. He began his schooling in Macuspana and completed his studies in Villahermosa (then called San Juan Bautista) at the Instituto Juárez, where he graduated with a teaching degree. He subsequently moved to Mexico City to study law, obtaining his license in 1912.
Beginning at a young age Santamaría demonstrated a talent for composition and an appreciation for the belles-lettres which would eventually evolve into a prolific career as a writer, lexicographer and linguist; his two most often cited works are the Diccionario General de Americanismos and the Diccionario de Mejicanismos, the second of which is a continuation and completion of Joaquín García Icazbalceta's original project.