This paper presents the findings of the study onawareness and use of electronic resourcesamong the users of Environmental Information Systems (ENVIS) Center Libraries in South India. A total 563 number of users from the Students, faculty members, research scholar, Research Associates and Research scientists were selected and their response was obtained with the help of questionnaire. The findings show that majority of respondents (62.87%) visit the library every day, (74.33%) of respondents are Aware & Use electronic resources, (44.56%) respondents are spent less than 1 hour for accessing e-Resources and (30.48%) respondents spent more than 2 hours for accessing e-Resources, (54.36%)of respondents agreed that the e-Resources is helpful as for as access from remote areas is concerned. Again, 45.81% of respondents have strongly agreed access to information is very fast and efficient by accessing e-Resources; (50.09%) of respondents have agreed that they faced the problem of Lack of time to retrieve the huge information and (49.91%) of respondents have disagreed that lack of internet connectivity and slow download are major problem while access information resources and services. 69.88% respondents are satisfied with the electronic resources and 15.69% of respondents are Extremely Satisfied with the electronic resources.