As the largest and most diverse ethnic minority population in the U.S., it is important to examine differences in and correlates of Pap test adherence among Hispanics by country of origin. The data for these analyses are baseline responses from a Randomized Controlled Trial. Bivariate and multivariable logistic regression models were conducted among Hispanic immigrant women who identified as Mexican, Puerto Rican, Dominican, or Central/South American (n = 1,305). There were significant differences in Pap test adherence: Dominicans (81.6%), Mexicans (77.5%), Central/South Americans (71.2%), and Puerto Ricans (69.3%). In multivariable analyses, there were different correlates of Pap test adherence for each country of origin. For example, marriage status (P = .0001) and younger age (P = .006) were positively associated with adherence among Mexican women. This research provides insight into the variability that exists among Hispanics and can help improve understanding of important determinants that may influence Pap test screening among diverse Hispanics.