The purpose of this study was to examine trust in health information sources among underserved and vulnerable populations. Data (N=8,759) were from the Health Information National Trends Survey. Differences were assessed across the following subgroups: ethnoracial minorities, immigrants, rural residence, people with limited English proficiency, and sexual minorities. Trust was highest for doctors, followed by government, family/friends, charities, and religious organizations. In adjusted regression models, trusting health information from charitable and religious organizations was higher in ethnoracial minorities and immigrants. Individuals with limited English proficiency also had higher trust in religious organizations compared with those fluent in English. Trusting health information from doctors was lower among individuals with limited English proficiency. There was evidence in support of additive and multiplicative intersectional frameworks for understanding trust in vulnerable and underserved populations; however, the extent to which differences in trust explain disparities in health behaviors and outcomes should be examined.