Biography.guide
Home › People › Professor › Cary Gabriel Costello
Portrait of Cary Gabriel Costello

Cary Gabriel Costello

American professor and advocate for intersex and transgender rights

Don't just read it — keep itBiographies to ownE-book · Audio · Video From $7 →

About Cary Gabriel Costello

Cary Gabriel Costello was an American professor and lGBTQ rights activist, known for Transgender rights.

Cary Gabriel Costello is an intersex trans male professor and advocate for transgender and intersex rights. His areas of study include identity, sexuality, privilege, and marginalization.

Career and personal life

Assigned female at birth, Costello first attempted a gender transition in 1991, while working as an attorney in Washington, D.C. Due to the discrimination he experienced, he postponed his transition, and left the legal profession to pursue a degree and career in sociology.

Costello has advocated for transgender and intersex people on issues including intersex surgery, eugenics, bathroom bills, and the sometimes fraught relationships between intersex and transgender communities. He has analyzed the controversy over the gender testing of South African athlete Caster Semenya from an intersex perspective. Costello has suggested using the term ipso gender instead of cisgender for intersex people who agree with their medically assigned sex.

Costello has a daughter, and is married to an intersex trans woman.

In February 2017, Costello and his wife lost access to transition-related healthcare when the state of Wisconsin reinstated an exclusion on these services. Additionally, his employer required that he obtain and submit new proof of his gender identity, despite the fact that he had transitioned over a decade earlier. A blog post Costello wrote about the situation went viral.

Selected publications

Biography shop

Don’t just read it —
keep it.

Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.

  • E-book
  • Audio
  • Video
Browse the shop — from $7

Instant download · yours to keep · every purchase keeps this site free

Important facts

Nationality
Known for
Transgender rights
Education
Yale College, Harvard Law School, University of California, Berkeley
Employers
University of Wisconsin–Milwaukee, University of Wisconsin, Milwaukee

Frequently asked questions

Who was Cary Gabriel Costello?

American professor and advocate for intersex and transgender rights

What was Cary Gabriel Costello's occupation?

Cary Gabriel Costello was a professor and lGBTQ rights activist.

What was Cary Gabriel Costello known for?

Cary Gabriel Costello was known for Transgender rights.

What nationality was Cary Gabriel Costello?

Cary Gabriel Costello was American.

Sources & further reading

· Wikipedia: Cary Gabriel Costello

· Wikidata: Q26704440

· DBpedia: Cary Gabriel Costello

Cite this page

APA: Biography.guide. (2026). Cary Gabriel Costello. https://biography.guide/cary-gabriel-costello/

MLA: "Cary Gabriel Costello." Biography.guide, https://biography.guide/cary-gabriel-costello/.

Chicago: "Cary Gabriel Costello." Biography.guide. https://biography.guide/cary-gabriel-costello/.

Data last updated: 2026-09-23 · Spot an error? Report a correction.

Portrait: Wikimedia Commons · author & licence

Page generated 2026-09-27 05:05 UTC