← 1865 1864 1863 1866 in Peru → 1867 1868 1869
Decades:	1840s 1850s 1860s 1870s 1880s
See also:	Other events in 1866 · Timeline of Peruvian history

Events in the year 1866 in Peru.

Incumbents

• President: Mariano Ignacio Prado

Events

• May 2 - Chincha Islands War: Battle of Callao

Births

• September 8: Amalia Puga de Losada, writer.

Deaths