You may have seen the terms AFAB (Assigned Female at Birth) and AMAB (Assigned Male at Birth) used in conversations about gender identity. These terms help describe someone’s assigned sex at birth, without assuming or labeling their current gender identity. AFAB and AMAB are used by many people, including those who are transgender, non-binary, or intersex. This blog post explains what these terms mean, why they matter, and how they help create more accurate and respectful conversations around gender.
AFAB and AMAB Describe Assigned Sex, Not Gender Identity
AFAB stands for Assigned Female at Birth. AMAB stands for Assigned Male at Birth. These terms refer to the label a person was given when they were born, typically based on physical characteristics like genitals, not how they identify now. For example, someone who is non-binary might be AFAB..
Using AFAB and AMAB helps shift the focus away from assumptions about gender, and towards a clearer understanding of someone’s experience. It also acknowledges that sex assignment at birth is not the same as gender identity.
Why People Use These Terms
Many trans, non-binary, and intersex people use AFAB or AMAB to talk about how their bodies have been categorized, and how that affects their experiences. These terms can help explain things like how someone may have been treated in society, how their body developed during puberty, or what kinds of healthcare they may have access to or need.
Using these terms is about clarity, not labeling or limiting someone’s identity.
Respecting People’s Identities Comes First
While AFAB and AMAB can be useful terms in medical, research, or community settings, it’s always most respectful to use the terms and pronouns someone identifies with now. Not everyone wants or needs to discuss their assigned sex, and that information isn’t always relevant. When in doubt, politely ask what pronouns they prefer, or listen to how someone talks about their identity and follow their lead.

Sources
Glassman-Hughes, Emma. “What Do AFAB and AMAB Mean?” Cosmopolitan, October 29, 2021. https://www.cosmopolitan.com/sexopedia/a38294924/afab-amab/.