Parental communication about body weight with their children is common across diverse families. The current study investigates how parents' feelings about their own bodies, beliefs about body weight, history of weight stigma, and weight-related characteristics contribute to the degree to which they talk about weight - both negatively and positively - with their adolescent children. The study sample was comprised of U.S. parents (N = 1936) from diverse racial/ethnic backgrounds with children aged 10-17 years old. Parents completed an online survey with measures assessing their frequency of engaging in negative and positive weight communication with their children, along with several relevant psychosocial factors (i.e. body satisfaction, experienced weight stigma, associative stigma, body appreciation, beliefs about weight controllability, weight bias internalization). Study findings paint a complex picture, including some psychosocial factors (e.g. weight bias internalization) that are related to both more frequent negative and positive weight communication. Notably, higher levels of associative stigma were related to more frequent negative parental weight comments, and less frequent positive weight socialization. Findings can inform healthcare professionals in raising parents' awareness about how their personal beliefs and feelings about their own weight and their child's weight can contribute to how they engage in communication about weight with their children.