Trigender is a gender identity which can be literally translated as 'three genders' or 'triple gender'. Trigender people experience exactly three gender identities, either simultaneously or varying between them. These three gender identities can be male, female and/or any non-binary identities. For those who experience other multiple genders identities, please see multigender.

Trigender people may also identify as multigender, non-binary and/or transgender. If a trigender person feels that their identity changes over time or depending on circumstance, they may also identify as genderfluid, which describes any person whose gender identity varies over time.

Trigender people can have any gender expression but many prefer to be seen as androgynous and/or change their presentation to be more masculine or feminine depending on their current identity. Trigender people may experience dysphoria in which they want their body to reflect traits from three distinct sexes, although in some cases other, however, not all trigender people experience dysphoria. Some trigender people may choose to transition so that their body more closely matches their gender identity, but not all do.

The term trigender was originally used in reference to the Native American gender, Two-Spirit.