This chapter provides a critical review of research concerning Lesbian, Gay, Bisexual, Trans*, Queer, and other non-heterosexual people (LGBTQ+) 1 in the field of marketing and 1 While many phenomena are complex, dynamic, and contingent, sexual identities are a particularly contested discursive terrain (see Ghaziani, 2017;Weeks, 2007Weeks, , 2017. We understand sexuality as a fluid entanglement of desires, practices, and identity propositions that are continually negotiated by individuals and collectives. These characteristics pose a challenge to researchers seeking a parsimonious but accurate label that encompasses all nonheterosexual sexualities. The acronym LGBTQ+ refers to the five main identity categories within this collective -Lesbian, Gay, Bisexual, Trans*, and Queer. Trans* is the umbrella term used by those who do not identify with the gender identity that they were assigned at birth (known as cis people; 'trans-' stems from the Latin word for 'across', while its antonym 'cis-' refers to 'this side of'). Words like transgender, transsexual, and transvestite are also used, but each has a different (and often controversial) meaning (Devor & Dominic, 2015). The asterisk (*) is borrowed from computer sciences where it represents a wildcard placeholder, meaning that trans* encompasses everyone who does not identify as 'cis'. The '+' is used to appreciate that even these five broad labels do not encompass the full variety of sexual and gender subjectivities, and can refer to asexual or questioning people, heterosexual allies, and intersexuals, amongst others. As discussed in the "Future Frontiers" section below,