Abstract
A static domain wall with infinitesimal thickness is obtained in the theory of a scalar field coupled to gravity with the dilaton, i.e. the Jordan-Brans-Dicke gravity. The value of the dilaton is determined in terms of the Brans-Dicke parameter ω. In particular the metric for the wall becomes flat and the dilaton, though nontrivial, has vanishing kinetic energy (i.e. ω=0) so that there is no gravitational effect due to such a dilatonic domain wall. Written in the Einstein frame, this solution is singular.
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