The aim of this paper is to present a novel negative temperature coefficient (NTC) thermistor based on A(2)Zr(2)O(7)(A = Nd, Sm, Gd, Yb) zirconate ceramics with pyrochlore-type structure for high-temperature application. The zirconate ceramics were synthesized via a solid-state reaction method where rare-earth oxides and ZrO(2)were used as starting materials. The physical structures were characterized by X-ray diffraction, scanning electron microscopy, and Raman spectroscopy. It was confirmed that Nd(2)Zr(2)O(7)and Sm(2)Zr(2)O(7)are pyrochlore phases, while Yb(2)Zr(2)O(7)and Gd(2)Zr(2)O(7)are defect fluorite phases. The electrical property investigated by using resistance-temperature measurements demonstrated that the prepared A(2)Zr(2)O(7)zirconate ceramics exhibit a typical characteristic of NTC over a wide temperature range between 673 and 1273 K. Particularly, A(2)Zr(2)O(7), in addition to having high activation energy to ensure better sensitivity, can still maintain higher resistivity under high-temperature environments. Furthermore, the resistivity of A(2)Zr(2)O(7)is almost independent of the change in oxygen partial pressure. These properties are superior to the classical spinel-type or perovskite-type NTC thermistor, providing valuable information to explore new NTC thermistor for high-temperature applications.