Ucanha is a place in northern Yucatán, Mexico, where scientists dig up Mayan ruins. It used to be a town where Mayans lived. People lived in Ucanha during the Late Preclassic period (ca. 300 B.C. — ca. A.D. 250). It was about 2.2 square kilometers in size. There were about 400 households. It was connected to a larger town, Uci, by a wide stone causeway. Uci is 13 km to the west of Ucanha.