Family law in Australia is governed primarily by the Family Law Act 1975, which is applicable across all states and territories. This area of law addresses matters related to marriage, divorce, child custody, property settlements, and spousal maintenance. The Family Court of Australia and the Federal Circuit Court of Australia handle most family law cases, with the Family Court focusing on more complex matters.

Key principles in family law include the best interests of the child as the paramount consideration in parenting matters, the equitable division of property, and the recognition of de facto relationships. The Family Law Act emphasizes resolving disputes through mediation and family dispute resolution before resorting to litigation.