The Center for Applied Transgender Studies (CATS) is an independent nonprofit research organization founded in 2021 in Chicago, Illinois.

[5] The organization works to promote empirical academic research on issues of relevance to transgender populations globally and mobilizes scholarly knowledge to engage in both policy advocacy and public education.

[6][7][8][9] Together with Northwestern University Libraries, CATS publishes the platinum open access peer-reviewed academic journal Bulletin of Applied Transgender Studies.

The Bulletin is led by founding editor and CATS executive director Thomas J Billard and an interdisciplinary editorial board consisting of scholars from eight countries on four continents.

The Bulletin's inaugural double issue was published on June 13, 2022, featuring research from scholars across a range of academic disciplines.