Francisco S. Carvajal (9 December 1870 – 20 September 1932) was a Mexican politician who served briefly as president in 1914. In his role as foreign minister, he succeeded Victoriano Huerta as president upon the latter's resignation. During his month-long presidential period, he oversaw the transfer of power to Venustiano Carranza and his Constitutionalist Army (treaties of Tecoloyucan).