Bisexual people experience marginalization, which contributes to unique stressors, such as bispecific microaggressions, invisibility, isolation, and internalized binegativity. Consequently, bisexual individuals demonstrate elevated risk for negative mental health outcomes, violence, poverty, workplace discrimination, and poor overall health compared with heterosexual, lesbian, and gay people. The field of psychology reflects and reifies the marginalization of bisexuality that is present in the larger society, which limits theory, practice, and research regarding this population. This article envisions moving bisexuality from margin to center. Centering bisexuality within psychology requires replacing distorted definitions, representations, and stereotypes with clear and accurate understanding of this population as well as attending to bisexuality in theory, research, and practice. Moreover, moving bisexuality from margin to center in a larger societal context can change the foundations of our very understanding of sexual orientation, attraction, sex, relationships, and gender. This article articulates a vision of bisexuality as a liberating force.