(born Juan Sumulong y Marquez; December 27, 1875 – January 9, 1942) was a former revolutionary, journalist, lawyer, educator and politician from Rizal province, in the Republic of the Philippines.
He was the President of the opposition party who ran against Manuel L.
Quezon during the 1941 presidential election of the Philippine Commonwealth.
He is also the maternal great-grandfather of former President Benigno Aquino III.