Three new records of late Pleistocene fossil peccaries come from localities in western Oklahoma and improve on the only previous record from the state. Isolated occurrences of partial jaws at Rush Creek, Grady County, and south of Yukon, Canadian County, represent the flat-headed peccary, Platygonus compressus. An assemblage with three taxa of mammals from a canal near the Quartz Mountains, Jackson County, includes a prairie dog Cynomys, a mammoth Mammuthus, and an unidentified peccary, Tayassuidae indeterminate. The last of these specimens includes a well-preserved skeleton of a foot, partial upper tusk, and occipital condyle.