Clemente de Lantaño Pino (31 July 1774, Chillán Viejo, Ñuble, Chile - 10 May 1846) was a royalist military officer during the Chilean War of Independence.
After the Battle of Maipú in 1818, he continued fighting with the royalists on the south shore of the Río Bío-Bío until he accompanied Colonel Juan Francisco Sánchez in the exhausting retreat to Valdivia in 1819.
In 1821, before the arrival of the rebel forces of José de San Martín, the viceroy ordered him to prepare the defense of the Department of Ancash.
Bernardo O'Higgins, who knew him before the revolution (because both were powerful neighbors in the same province), offered to recognize his rank if he joined the patriot army.
Lantaño proposed in the name of the government of Santiago the incorporation of the archipelago of the recently created Chilean Republic, trying to convince Quintanilla of the inevitable defeat of Spanish arms in Chile.