Ceramic matrix composites are potential candidates for use at high temperatures, in various systems including aerojet engines, stationary gas turbines for electrical power/steam cogeneration and components in nuclear power plants. It has been demonstrated that ultimate failure is dictated by fiber tows in those composites reinforced by a stack of woven fabrics. A multiscale approach to the fatigue of CMCs is being devised. Thus, the investigation of the static fatigue of tows is an important step. The present paper examines the static fatigue of HiNicalon SiC multifilament tows at high temperatures above 900°C.