There is emerging empirical evidence indicating that differences in self-reported sensory processing may be associated with differences in levels of stress in the adult populations. Understanding how sensory processing relates to stress is of clinical relevance, given the well-established impact of stress on physical health, mental health and well-being. Although several studies have examined the association between sensory processing and stress in adult populations, no published reviews have systematically summarised and synthesised these findings. We aimed to fill this gap by conducting a systematic review to synthesise the available evidence examining the association between self-reported sensory processing and self-reported measures of stress in the adult population.