Non-monogamy refers to a set of relationship identities and structures that go against societal norms and expectations of "typical" relationships (i.e., monogamous heteronormative dyadic relationships). As such, non-monogamous individuals often conceal this identity and then need to engage in continuous decision-making processes regarding when and how to disclose, due in part to the structural barriers, stigma, and discrimination faced by this population. This study sought to explore the experiences of the disclosure of consensual (or ethical) non-monogamy and the factors impacting on the decision to disclose across a range of environments. Data on lived experiences were explored by conducting qualitative semi-structured interviews with 32 non-monogamous adults living in Australia. Based on grounded theory, four key themes were identified during the analysis of the data: (1) decisions around how and when to disclosure are complex, (2) responses to disclosure are typically negative, (3) structural barriers typically prevent disclosure, and (4) unless specifically trained, healthcare providers are typically uninformed about non-monogamy. These findings are discussed in relation to providing a base model of disclosure for future research to build upon and to enhance understanding of systemic and healthcare-related issues faced by this population. This research adds to the current understanding of factors impacting disclosure, with possible clinical implications and suggestions for future research discussed.