Parenthood is an aspiration shared by a majority of U.S. adults. However, previous research has found that sexual minority adults (e.g., lesbian, gay, bisexual [LGB]) are less likely than heterosexual counterparts to be parents or desire to become parents in the future. To date, few studies have examined how minority stress (i.e., everyday discrimination [ED], felt stigma [FS], and internalized homophobia [IH]) influences parenting desire, parenting likelihood, and expectation a gap between the two. Even fewer studies have examined the parenting aspirations of sexual minority individuals following nationwide legalization of same-sex marriage in the United States. We analyzed data from 487 childfree lesbian, gay, bisexual, and queer participants from two cohorts (“equality cohort”: ages 18-25; “visibility” cohort: ages 34-41) from the Generations study, a national probability sample of sexual minority adults in the United States. As expected, we found that the visibility cohort adults had significantly lower parenting desire and parenting likelihood, and a greater parenting expectation gap than the equality cohort adults. Additionally, while everyday discrimination (ED) did not predict parenting aspirations, IH and FS predicted higher parenting desire and lower parenting likelihood, respectively. We found a cohort by FS interaction such that FS predicted even lower parenting likelihood in the visibility cohort adults. Our findings contribute to a growing body of research on sexual minority parenthood and may inform community practice and clinical support for sexual minority adults who pursue parenthood.