Although pain location is an important assessment parameter, little research has addressed validity and reliability of a body outline in pediatric populations. In a descriptive study, validity and reliability of markings on a body outline were examined in a convenience sample of 8- to 17-year-old hospitalized children (n = 175). Children marked their pain location on a body outline. Each child then pointed to the pain location on his/her body as a nurse data collector, blind to the child's markings, recorded the location on a second body outline. Data were obtained to substantiate the pain location. Findings provide strong support for the validity and reliability of a body outline and for its inclusion in a multidimensional pediatric pain tool.