Radiocarbon dates are presented and discussed for two sites with deep stratigraphy on Ua Huka Island, Marquesas. The lowest layer at the Hokatu site dates to the eleventh to thirteenth centuries A.D. At Hatuana, earlier radiocarbon--age estimates extended to the sixth to ninth centuries A.D. New results from the Waikato and Oxford Radiocarbon laboratories indicate that the lower levels at Hatuana are no older than about the fourteenth century. KEYWORDS: radiocarbon dates, East Polynesia, Marquesas, French Polynesia, archaeology.