This article discusses how hostile sexism, which contributes to gender inequalities, discrimination, and violence, can harm parenting. Fathers and mothers who hold hostile sexist views exhibit less responsive parenting, showing less warmth, engagement, and sensitivity towards their children. During the Covid-19 lockdown, men with higher levels of hostile sexism reported more aggressive parenting. Self-reports and behavioral assessments have provided evidence of the negative effects of hostile sexism on parenting. Reducing beliefs about rigid gender roles and addressing gender inequalities could lead to more responsive parenting and improve child well-being.