 Australia's world-class health and medical research system generates vast amounts of data, and much of it has potential value beyond its original purpose. It's for this reason that Australia's first National Health Data Sharing Platform, Health Data Australia, has been launched. Making data from investigator-initiated and academic clinical trials safely and securely available for secondary use can enable the building of richer and more extensive datasets, inspire new research questions, and generate new hypotheses. It can synchronize research efforts, reduce duplication, and save money. Improving the return on Australia's considerable investment in health and medical research. And most importantly, secondary data use can increase the impact of research on health services and ultimately the health and wellbeing of our communities. But it goes beyond that. By making your data available to answer questions beyond the scope of the original trial, you can extend the life of your research, initiate or expand professional collaborations, and significantly increase your publication citations, thus contributing to the competitiveness of your grant applications. With your help, Health Data Australia can benefit you, the wider research community, and Australia as a whole. To find out why you should share your research data and how we can help, visit our website.