Jack Halberstam, also known as
Judith Halberstam, is an American academic and author, best known for his book
Female Masculinity (1998). His work focuses largely on feminism and queer and transgender identities in popular culture. Since 2017, Halberstam has been a professor in the department of English and Comparative Literature and the Institute for Research on Women, Gender, and Sexuality at Columbia University. Previously, he worked as both director and professor at The Center for Feminist Research at University of Southern California (USC). Halberstam was the associate professor in the Department of Literature at the University of California at San Diego before working at USC.