Hir is a gender-neutral third-person, singular pronoun for objects. Hir is the gender-neutral version of the male third-person pronoun him and the female third-person pronoun her, created by combining the binary pronouns together.
Unlike him and her, hir does not make assumptions about an individual’s gender identity. For this reason, hir is commonly used by people with nonbinary genders, including transgender and gender-fluid people. It is an alternative to other gender-neutral third-person pronoun their and them.