PURPOSE : Children who are deaf and hard of hearing (DHH) face a wide array of issues that can impact their mental health and well-being. This study aimed to explore the role of schools and classroom teachers in supporting the mental health and well-being of DHH children. METHOD : A qualitative study comprising telephone and semistructured interviews with 12 mainstream school classroom teachers who directly support the education and well-being of DHH children was conducted. Thematic analysis was used to analyze the data. RESULT : Classroom teachers indicated they play an important role in supporting the mental health and well-being of DHH children but identified a range of constraints to providing this support. Four themes were identified: (a) "culture of professional practice," (b) "operationalized practice," (c) "constraints to practice," and (d) "solutions for constraints." CONCLUSIONS : Classroom teachers play an important role in supporting the mental health and well-being of DHH children but face several constraints in their practice, including limited training and awareness and access to resources. While further research is needed, this study suggests that classroom resources and teacher professional development are needed to enhance classroom teachers' understanding of how to support the mental health and well-being of DHH children.