The study examined environmental consciousness patterns among patrons in academic and public libraries. Using the survey method, data was collected from 383 patrons who were conveniently selected from six libraries in Lagos metropolis. Cronbach’s alpha coefficient was used to determine the internal consistency and reliability of the multiple item scales. The least Cronbach’s Alpha value returned for the variables in the questionnaire was 0.79. Q uantitative data was analysed using descriptive and inferential statistics. Waste disposal was found to be the most disturbing environmental issue. Respondents from both academic and public libraries agreed that there is not enough useful information on adopting pro-environmental behaviours (PEBs). Further findings showed that respondents from both academic and public libraries demonstrate similar pattern of motivation towards environmental consciousness. It is recommended that libraries should include services that will foster eco-friendly behaviour among library patrons.