BackgroundFood insecurity is a pressing public health problem. Lesbian, gay, and bisexual (LGB) people are at increased risk for food insecurity, yet this issue remains grossly understudied among this population. The purpose of this study was to add to the existing literature surrounding food insecurity and the use of federal food assistance programs (SNAP) among LGB people.MethodsThis study used publicly available, de-identified data from the 2017 National Health Interview Survey (NHIS). Primary variables were sexual orientation, food security status, and receipt of SNAP. Food security was assessed using the 10-item USDA Family Food Security measure.ResultsIn our sample, people who identified as bisexual had the highest rates of food insecurity (23.8%, n = 76). Female sexual minorities were 52% more likely to experience food insecurity (aOR = 1.518, 95% CI 1.105–2.087, p = .01) and 44% more likely to report household SNAP assistance than their heterosexual counterparts (aOR = 1.441, 95% CI 1.025–2.028, p = .03). SNAP partially mediated the association between sexual orientation and food insecurity for LGB females.ConclusionsOur findings add to the growing empirical evidence documenting food insecurities among sexual minority adults. Our results reiterate the need for sexual orientation to be included in nationally representative federal food security measures.