The Study is about to find a correlation between Digital Literacy skills and the Library Services Delivery in Tamil Nadu Universities and more than 75 library professionals of selected Tamil Nādu Universities through random sampling method are used for the study. A questioner in Google Form was designed and circulated among the 75 users through e-mail for data collection using random sampling method. Out of the 75 questioners circulated, only 63 are dully filled and found suitable for data analysis. Descriptive and inferential statistics was used for analysis of Data and Single hypothesis with 0.05 level of significance using the linear regression was tested. Subsequently, Creswell correlational ranking was used to decide the strength of relationship strength between variables and results are displayed in frequency tables. The findings of the study show that majority of library professionals have Digital Literacy skill, a considerable number of Library Professionals have to improve their digital literacy skill in areas like ability to use computer systems for information dissemination, ability to use different software, design a simple webpage, obtain product keys for software, design Mobile Applications, and design Cloud Applications etc. Among other skills and among the numerous services provided by the library, the library professionals were skillful in using internet to search and communicate information, conduct website evaluation and use Boolean logic etc. Moreover, Study results showed a correlational value of 0.963 and the hypothesis yielded a p-value less than 0.05. Which implies that the null Hypothesis is rejected, and it is concluded that there is evidence of linear relationship and hence there is significant relationship between the Digital Literacy Skills of the Library professionals and the Library Service Delivery of the Identified universities in Tamil Nādu. Based on the results of the study it is recommended that library authorities should focus on the ways and means of, intensifying the efforts in creating awareness and should be initiated steps that the library professionals should be provided with appropriate training on digital literacy skills, their application and essence, in order to enable them to acquire more of the skills, together with applying them to maximize the library service delivery, among other things for better service to the users.