Fort Lapwai (1862–1884), was a federal fort in present-day Lapwai in north central Idaho, United States. On the Nez Perce Indian Reservation in Nez Perce County, it was originally called Camp Lapwai until 1863. East of Lewiston, it was located on the west bank of Lapwai Creek, three miles (5 km) above where it joins the Clearwater River at the state's first settlement, Lapwai Mission Station (now Spalding), built in 1836 by Henry Spalding. It is part of the multi-site Nez Perce National Historical Park. The word "Lapwai" means place of the butterflies, as the area had thousands in early summer in earlier years.