  We demonstrate the existence of chaos in realistic models of two-field
inflation. The chaotic motion takes place after the end of inflation, when the
fields are free to oscillate and their motion is only lightly damped by the
expansion of the universe. We then investigate whether the presence of chaos
affects the predictions of two-field models, and show that chaos enhances the
production of topological defects and renders the growth rate of the universe
sensitively dependent upon the ``initial'' conditions at the beginning of the
oscillatory era.
