This study explored parents concerns for their children during COVID-19 related lockdown. Thirty-four Australian parents/guardians of children under 18 years completed a semi-structured interview, average length 47 minutes. Interviews focussed on potential changes in parenting practices during lockdown; communication and relationships; and strengths, challenges and tensions. Data were analysed using reflexive thematic analysis. Three primary concerns were identified, namely, concerns for children and adolescents social development, concerns regarding their education and the possibility of 'falling behind' and fears regarding the mental health impacts of lockdown. Strengths and resilience were also identified, in some cases alleviating fears. The results highlight issues of importance to Australian parents and offer directions for future health promotion campaigns and interventions.