Agustín Gamarra Messia (August 27, 1785 in Cusco, Peru – November 18, 1841 in Ingavi, Bolivia) is a Peruvian soldier and politician, becoming twice President of Peru from 1829 to 1833 and from 1838 to 1841.

Gamarra is a Mestizo, being of mixed Spanish and Quechua descent.

He has a military life from childhood, battling against the royalist forces.

He then joins the cause of Independence as second in command after Andrés de Santa Cruz.

He also participates in the Battle of Ayacucho, and is later named Chief of State.

After the invasion of Bolivia in 1828, he is named a mariscal, a highly esteemed military officer.

After the defeat of José de la Mar in Gran Colombia, Gamarra urges his overthrow and assumes the presidency for a brief period after Antonio Gutiérrez de la Fuente.

The peace treaty with Gran Colombia i also signed during Gamarra's government.