The Codex of Santa Catarina Ixtepeji (in Spanish, Códice de Santa Catarina Ixtepeji) is a late 17th-early 18th century bilingual codex in the Spanish and Zapotec languages. It is a 7-foot-long scroll (2.1 m), a hand-painted history and map recounting part of the history of Santa Catarina Ixtepeji, in the Ixtlán District in the Sierra Norte region of Oaxaca in southwestern Mexico. It had been held in the hands of private collectors into the 20th century, and was re-discovered and identified as part of the holdings of the American Geographical Society Library at the University of Wisconsin–Milwaukee in early 2012, as the result of efforts of scholars at UWM, Marquette University and the Universidad Nacional Autónoma de México.