This research explores the perspectives and practices of Equity, Diversity, and Inclusion (EDI) in Canadian Science, Technology, Engineering, and Mathematics (STEM) academic librarianship. Research data were collected from Canadian STEM librarians through an online survey and one-on-one interviews. Findings indicate that the majority of participants' libraries and institutions have integrated EDI into their strategic plans, policies, or guidelines. These STEM librarians shared their perspectives, experiences, opportunities, and challenges in achieving their EDI goals. Besides providing examples of practices, the research sheds light on potential improvements to encourage STEM academic librarians to effectively integrate EDI into their professional practices. Establishing a supportive organizational culture for EDI is identified as a crucial motivational factor.