Men are the predominant perpetrators of domestic and family violence (DFV) with the risk of serious harm disproportionally borne by women and children. In Australia, men’s behaviour change programs (MBCP) form the most significant nationally auspiced response for abusive and violent men, beyond legal sanctions. This one-size-fits-all approach makes it difficult to determine efficacy and application to the diversity of intervention needs, or to establish suitability across a diverse perpetrator population. More broadly across Western contexts, responses are largely siloed across child protection and specialist DFV services, leading to a lack of holistic intervention. Often fathers have remained invisible or minimally engaged where legal sanctions against them are not taken. Yet, due to the complexities of family life, including the child custody rights of fathers, many families have ongoing contact with perpetrators. Recently emerging father-oriented programs have therefore sought to target domestically violent behaviour and poor parenting practice together, leveraging men’s motivation to be better fathers. This study focuses on Caring Dads, a father-focused MBCP program, originating in Canada, which seeks to address the problem of violence in families resulting from both partner and child-directed abuse. The Caring Dads program has some evidence of effectiveness in Australian-comparative contexts, though the focus of evaluations has, to date, centred on improvements to mother and child safety. Such evaluations follow a gendered analysis of violence, which is important for identifying the program’s capacity to create improvements in the safety of women and children, but they do not address the concerns of co-parenting and whole-of-family wellbeing, which are significant when families continue contact in the wake of DFV. This thesis addresses a gap in the evidence by considering whether the Caring Dads program can improve parental alliance and family functioning for families where fathers have used DFV and continue contact with their families, either through remaining in families, or through post-separation parenting contact.