Herrup's writings center primarily on the social history of criminal law, but she also touches upon the historical impact of gender and sexuality. Her first book, The Common Peace: Participation and the Criminal Law in Seventeenth-Century England, examined how communities without lawyers made decisions about law enforcement—it postulated that people as well as lawyers were important in the history of law. Her second book, A House in Gross Disorder: Sex, Law, and the 2nd Earl of Castlehaven (1999), used a notorious trial to explore how law reflected tensions between genders and generations.
Cynthia Herrup edited the Journal of British Studies from 1991 to 1996. From 1995 to 1997, she served on the editorial board of the Journal of Modern History. Herrup was also president of the North American Conference on British Studies from 2003 to 2005.
- The Common Peace: Participation and the Criminal Law in Seventeenth-Century England (1987)
- A House in Gross Disorder: Sex, Law, and the 2nd Earl of Castlehaven (1999)
- "Faculty Profile > USC College of Letters, Arts & Sciences". college.usc.edu. Retrieved 2010-01-22.
- "Archived copy". Archived from the original on 2010-05-27. Retrieved 2010-02-03.CS1 maint: Archived copy as title (link)
- "List of Fellows". John Simon Guggenheim Foundation. Retrieved 24 January 2010.