Sinibaldo de Mas (1809, Barcelona – 1868, Madrid) was a Spanish government diplomat to Asia during the 19th century.
De Mas was dispatched from Spain in 1834.
During his two-and-a-half-year stay in the Philippines, de Mas made a living by taking photographs because of limited financial support from the Spanish government.
Today, his name is known to students of Philippine history because of his having written the Informe sobre el estado de las Filipinas en 1842 (A Report on the Status of the Philippines in 1842).
