This study examined the relationship between ADHD diagnostic status and child-reported emotion regulation and its relationship with parenting stress within three subscales-Parent Distress, Difficult Child, and Parent-Child Dysfunctional interaction. Two hundred children ages 7-13 were enrolled in the study, including 120 children with ADHD and 80 children without ADHD. Overall, it was found that ADHD diagnostic status was significantly associated with the Parent Distress subscale, both ADHD diagnostic status and emotion regulation difficulties were significantly associated with the Difficult Child subscale, and emotion regulation difficulties were significantly associated with the Parent-Child Dysfunctional interaction subscale. This study not only shows that there should be an emphasis on treating parenting stress, but the differences between subscales shows that the type of parenting stress discussed matters when implementing treatment as well.