Ronald J. Mellor (born September 30, 1940) is a distinguished professor of history at the University of California, Los Angeles.^[1] His area of research has been ancient religion and Roman historiography, where he has published a number of books.^[2][3]

Mellor attended Regis High School in New York City.^[4] He received his Ph.D. in Classics from Princeton University in 1968. His previous teaching posts include Stanford University. He has been a Visiting Fellow/Scholar at University College, London, the Humanities Research Centre of the Australian National University, the American Academy in Rome, and the Institute for Advanced Study in Princeton, New Jersey.^[2]

• Ronald Mellor, "θΕΑ ΡΩΜΗ: The Worship of the Goddess Roma in the Greek World" ISBN 3525251386 Vandenhoeck & Ruprecht 1975
• Ronald Mellor, "From Augustus to Nero: The First Dynasty of Imperial Rome" ISBN 0870132636 Michigan State Univ. Press 1989
• Ronald Mellor, "Tacitus" ISBN 0-415-90665-2 Routledge 1992
• Ronald Mellor, "Tacitus: The Classical Tradition" ISBN 0815309333 Garland Books/Routledge 1995
• Ronald Mellor, "The Roman Historians" ISBN 0415117747 Routledge 1999
• Ronald Mellor, "Text and Tradition: Studies in Greek History and Historiography in Honor of Mortimer Chambers" (with L. Tritle) 1999 Regina Books
• Ronald Mellor, "The Ancient Roman World" (with Marni McGee)ISBN 0195153804 Oxford University Press 2004
• Ronald Mellor, "The World in Ancient Times: Primary Sources and Reference Volumes" (with Amanda Podany) ISBN 0195222202 Oxford University Press 2005
• Ronald Mellor, "Augustus and the Creation of the Roman Empire" ISBN 0312404697 St Martin's Press 2005
• Ronald Mellor, "Tacitus' Annals" ISBN 0195151933 Oxford University Press 2010
• Ronald Mellor, "The Historians of Ancient World" Routledge 1997 (1st ed.); 2004 (expanded 2nd ed.); 2012 (expanded 3rd ed.) ISBN 9780415527163