Compulsive Sexual Behavior Disorder (CSBD), recently recognized in the ICD-11 as an independent disorder, has been shown to be more prevalent in sexual minorities. However, we still lack studies investigating which factors contribute to CSBD and related behaviors in this group. In our cross-sectional study, we investigated the relationships between characteristics potentially contributing to CSBD and problematic pornography use (PPU) in sexual minority individuals: sexual minority stress (internalized sexual stigma, discrimination experiences, and openness about one's sexual orientation), perceived social support, and sexualized drug use (also more prevalent in sexual minorities). We adjusted for gender, age, sexual orientation, and the frequency of sexual behaviors. Cisgender sexual minority participants (n = 198, 72.7% men, 27.3% women; Mage = 27.13, SD = 7.78) completed an online survey. We conducted a two-step linear regression. In the first step, we introduced sociodemographic variables and the frequency of sexual activities. In the second step, we placed the predictors of main interest: perceived social support, minority stress measures, and the frequency of sexualized drug use. Our results showed that social support was negatively related to CSBD, while experiences of discrimination due to sexual orientation and engagement in sexualized drug use were associated with higher CSBD symptom severity. Internalized sexual stigma related to greater PPU severity. The discussed relationships were weak to moderate in strength. Implications of current results for therapy and diagnosis of CSBD in sexual minorities are discussed. The role of minority stressors and other factors specific to sexual minorities requires further exploration to design well-suited therapeutic interventions.