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This study investigated the usefulness of digital collections conducted by lecturers at Raden Fatah State Islamic University as a reference source. This research is a mixed method research with a total population of 537 and the authors took a research sample of 54 lecturers of UIN Raden Fatah using random sampling technique. The data technique used was a questionnaire using a Likert scale with four answer, interviews, observation, and documentation. The data obtained were analyzed using the mean and grand-mean formula. The results of study showed that the average value is categorized as high with an average value of 2.93. The average intensity value on the sub-variable of use is 2.95, the sub-variable of the frequency of use is 2.99 and the sub-variable of the number of collections used is 2.86.https://sinta.ristekbrin.go.id, https://sciencedirect.com and B-ok.org. The lecturers also responded that the network that was often unsupported, there were many digital collections that were locked and difficult to access, and not all digital collections could be downloaded.