Ricardo Almendáriz (fl. 1787) was a Guatemalan draftsman who accompanied Antonio del Río to the first excavation of pre-Columbian Maya ruins at Palenque in Chiapas, Mexico. Undertaken in May and June 1787, the expedition was performed under orders from Charles III of Spain, to investigate reports about the ruins from the inhabitants of the neighboring pueblo of . The team spent two weeks digging at the location, followed by three weeks studying the site.