This paper uses the National Survey of American Life (NSAL) to examine within group differences regarding help-seeking for substance disorders among a US sample of African American and Caribbean Black men and women. We examined ethnic and gender differences in the type of providers sought for substance disorder treatment, as well as reasons for avoiding treatment. Results indicate that overall, few ethnic differences exist; however, African Americans are more likely than Caribbean Blacks to seek help from human service professionals (including a religious or spiritual advisor) and from informal sources of treatment such as self-help groups. Black men with a substance disorder were more likely to see a psychiatrist than Black women. Findings regarding reasons for avoiding treatment suggest that there may be a need to provide better education about the utility of substance disorder treatment, even before problems reach a high level of severity.