The South Australian parliament has passed landmark reforms to birth certificate regulations, allowing same-sex parents to be formally recognised as mother, father or parent. The changes, introduced by SA Greens MLC Robert Simms, replace the previous term 'co-parent' and passed both houses this week.
Greater Choice for LGBTIQ+ Families
The reform gives LGBTIQ+ families greater choice in how their parental roles are recorded on birth certificates. Under previous laws, certificates only permitted a mother, father or a single 'co-parent' designation, limiting recognition for same-sex parents. Simms said the change 'better reflects the diversity of family structures' in South Australia.
For the first time, two mothers can now be listed equally as mothers on their child's certificate. The law applies retrospectively, meaning families can request a new certificate with the updated terminology.
Community Advocacy Drives Change
The Greens credited community advocacy for the reform, including same-sex mothers Skye and Lyssa, who raised the issue with the party in 2023. Advocates say the reform is a significant step for LGBTIQ+ rights in South Australia, though further work remains to ensure state laws fully recognise diverse family structures.
Simms described the outcome as parliament 'listening and responding to community advocacy' and offered a positive moment in what he called a challenging week in state politics.
Alignment with Other States
South Australia's move brings the state into line with most of the country. New South Wales, Queensland, Victoria, the Australian Capital Territory and Western Australia already allow same-sex parents to be formally recognised as mother, father or parent on birth certificates. The Northern Territory remains the only jurisdiction without a standardised process for same-sex parent registration.



