Lori Gruen is an American philosopher, ethicist, and author who is the William Griffin Professor of Philosophy at Wesleyan University in Middletown, Connecticut.

[10] In 1987 she published her first book, Animal Liberation: A Graphic Guide, written with Peter Singer and illustrated by David Hine, then returned to the University of Colorado Boulder in 1989, where she completed her PhD in 1994.

[12] Gruen served as the co-editor of Hypatia, the feminist philosophy journal, from 2008 to 2010, and as a member of its board of associate editors from 2010 to 2015.

[16][17][18][19] In April 2017, Hypatia published a peer-reviewed article by Rhodes College philosophy professor Rebecca Tuvel that compared transgender and transracial identities.

New York magazine reported that Gruen was a lead signatory of an open letter calling for the retraction of the article by her former dissertation advisee.