Professor Christina Twomey is an internationally recognised historian and academic leader whose research focuses on the social and cultural history of war, with a particular interest in imprisonment and internment, gendered violence, trauma, Australia-Asia relations, humanitarian and aid programmes, and visual cultures of atrocity. Her most recent work examines Australia's Asian garrisons and regional engagement during the Cold War period.

An elected Fellow of both the Australian Academy of the Humanities and the Academy of the Social Sciences in Australia, Christina has held a number of senior leadership roles across the higher education and research sectors. Most recently, she served as Chief Research Officer at the Australian Research Council (2023-25). She has also been Vice-President of Monash University's Academic Board, Head of the School of Philosophical, Historical and International Studies in the Faculty of Arts (2017-21), and a member of the ARC College of Experts (2019-21). She has held numerous elected positions, including Chair of the Board of Australian Historical Studies (following a term as Editor, 2012-15), member of the Executive of the Australian Historical Association and President of the International Australian Studies Association. In 2012, she was the Department of Employment, Education and Workplace Relations Distinguished Visiting Chair of Australian Studies at the University of Copenhagen, and in 2018 she was a Visiting Professor at Kyushu University. She currently serves on the Council of the Australian Academy of Humanities. 

Christina is a prize-winning historian. Her book The Battle Within: POWs in post-war Australia (2018) won the 2018 NSW Premier's Prize for Australian History. She also co-authored A History of Australia with Mark Peel (2011: 2nd Edition, 2017). Her book, Australia's Forgotten Prisoners: Civilians Interned by the Japanese in World War Two (2007) won a NSW Premier's History prize in 2008. In 2009, she was awarded the Frederick Watson Fellowship by the National Archives of Australia. Her first book, Deserted and Destitute: Motherhood, Wife Desertion and Colonial Welfare (2002), grew from doctoral research on gender and welfare in colonial Victoria and received the Australian Historical Association/ National Centenary of Federation prize. Her research has been supported through the Australian Research Council's Discovery, Linkage and Future Fellowship schemes.

Recent publications include Fault Lines: Australia's Unequal Past (Monash UP, 2025: with Seumas Spark), Gender and Trauma since 1900 (Bloomsbury, 2021: with Paula Michaels) and Detention Camps in Asia (Brill, 2022: with Robert Cribb and Sandra Wilson). Other published collections range from The Pacific War: Aftermaths, Remembrance and Culture (Routledge, 2015: with Ernest Koh) to Australians in Papua New Guinea, 1960-75 (UQP, 2014: with C. & S. Spark). Journal special issues include 'Protection: Global Genealogies, Local Practices' for Pacific Historical Review (2018) and 'Photography and Atrocity' for History of Photography (2012).