Although the prevalence of childhood obesity has not increased in recent years, it remains unacceptably high and warrants continued study. The purpose of this study was to explore the potential relationship between weight status and length of sleep (both daytime and nighttime) among preschool children. Special attention was given to the role daytime naps play in weight status, in light of recent discussions to reduce or eliminate preschool nap time to make room for more teaching time. Although data were collected from a small number of preschool children (N = 14), results of this exploratory study showed that the children who napped during the day were less likely to be overweight than children who did not nap. These findings add support to the value of daytime sleep for preschool children.