Tomás Cipriano Ignacio María de Mosquera-Figueroa y Arboleda-Salazar (September 26, 1798 – October 7, 1878) was a Colombian general, political figure, and slave owner. He was president of Colombia four times. The first time was as president of Republic of New Granada from 1845 to 1849. During the Colombian Civil War of 1860–1862 he led liberal forces in a civil war against conservative factions. After the liberals won, a new, federalist constitution was implemented, which established a two-year presidency, and the nation renamed the United States of Colombia. Mosquera served twice as president of the new government. From 1861 to 1862 he served in a non-elected, interim manner, while the constitution was written. From 1862 to 1864 he served in an elected manner. He had a fourth term from 1866 to 1867. Due to the liberal reforms carried out under his leadership, he is considered one of the most important persons in Colombian history of the 19th century.