Graeme Simsion is an Australian author, screenwriter, and data modeller. He is best known for his debut novel, The Rosie Project, which was published in 2013 and has since been adapted into a feature film. Simsion has also written several other novels, including The Best of Adam Sharp and The Rosie Effect. He has also written for television and film, including the Australian series The Secret Life of Us. Simsion is also a data modeller, having worked in the field for over 20 years. He is passionate about using data to tell stories and has written several books on the subject. Simsion is a passionate advocate for mental health and has been involved in several initiatives to raise awareness and support those affected.