Catherine Lenore Itzin (29 May 1944, in Iowa City, Iowa, US – 9 March 2010), also known as Cathy Itzin, was a critic specialising in alternative theatre and later an advisor on women's issues. Itzin immigrated to Britain in the late 1960s and completed an MPhil at University College London and a PhD at the University of Kent some years later. A co-editor of Theatre Quarterly until 1977 she began the Alternative Theatre Directory as a short section of the journal in 1971; the directory itself had become a substantial periodical by 1975. She was drama critic of Tribune for a decade or so, and wrote a history of the alternative theatre movement, published as Stages in the Revolution: Political Theatre in Britain Since 1968 (1980).