Sustainability in higher education involves the integration of sustainable principles, practices, and values into the fundamental functions of educational institutions, addressing environmental, social, and economic dimensions. This study aims to evaluate sustainability practices in Saudi higher education institutions, focusing on faculty members' perceptions. The primary objective is to assess the extent of sustainability implementation across academic, research, social, and environmental dimensions in Saudi universities. By leveraging faculty members' insights, the study seeks to identify areas of strength and weakness in current sustainability practices. The research adopts a descriptive and analytical approach, utilizing an electronic questionnaire as the primary data collection tool. A random sample of 275 faculty members from diverse Saudi universities actively participates in the study. Descriptive and inferential statistical methods are applied for data analysis and hypothesis testing. The findings indicate a limited implementation of sustainability practices within Saudi universities across various dimensions, as perceived by faculty members. Weaknesses are identified in academic, research, social, and environmental spheres. The study recommends that universities prioritize sustainability by establishing dedicated committees and drawing inspiration from successful institutions in the field. A clear strategic vision for sustainability is crucial for advancing these practices within higher education institutions in Saudi Arabia.