A nascent body of research is growing on the issue of disclosing one’s sexuality, also termed “coming out,” and the implications for attitudes, behavior, and health. This research engages (a) the political attitudes of those reporting their sexual identity, and (b) the social conditions that lead people to express different forms of sexual identity. Four main findings help to characterize the relationship between coming out and political attitudes among sexual minorities. First, people who come out tend to be socially liberal, but the reasons behind this pattern remain unclear. Second, tolerant social conditions correlate with coming out; expressions of tolerant attitudes; and political engagement on behalf of lesbian, gay, and bisexual rights. Third, the reverse holds as well: Intolerant, homophobic social conditions correlate with the concealment of one’s homosexuality and the expression of homophobic attitudes. Fourth, homophobic social conditions also may lead to worse mental health outcomes, which in turn reduce political efficacy and participation. However, the causal relationships between social conditions, coming out, political outcomes, and health outcomes elude existing research. Future research can unpack these relationships and include more cases outside Western Europe and North America, where most research on this topic is conducted.