The core tool for measuring the sustainability of the Library and Information Science (LIS) discipline is the curriculum which has always been a source of concern within the Nigerian space. It was on this premise that the study systematically investigated the redesigning of LIS curriculum for sustainable environmental transformation among students of the Department of LIS, Lead City University (LCU). Findings of the study showed that the majority of students opined that the redesigned curriculum is promoting sustainable environmental transformation as it is equipping the ideal 21st-century librarian with the requisite skill set (70%); redefined curriculum promotes a socially oriented librarian (53.2%); curriculum emphasizes the economic implications of the library for sustainable environmental transformation (43.3%); curriculum broadens the horizon of students further into meeting the information needs of the present clienteles without compromising the future generations (55.7%). The outcome of the study is expected to inform policy in adopting the redefined LIS LCU curriculum in Nigeria.