The radiocarbon dates of two wood particles collected from the funerar
y boat of Pharaoh Khufu were measured with a Tandetron AMS (accelerato
r mass spectrometer) at Nagoya University. 4592+/-91 yr.B.P. (2642+/-9
1 B.C.) is the most proper date among the results of measurement. This
date agreed well with the estimated age of Khufu's reigning (ca. 4500
years ago), considering the possibilities of rotting or processing lo
ss of wood materials. Further data accumulation and their comparisons
will be required.