The Association for the Advancement of Computing in Education (AACE) is an international, non-profit educational organization. The Association's purpose is to advance the knowledge, theory, and quality of teaching and learning at all levels with information technology. "E-Learn 2017: World Conference on E-Learning" took place in Vancouver, British Columbia, October 17-20, 2017. The proceedings are comprised of 153 papers, including seven award papers. The award papers cover topics such as effective peer assessment models for improving online learning; distance learning instructional design; factors influencing response rates in online student evaluation systems; physical computing for STEAM education; how post-secondary students with disabilities use their mobile devices; how mobile tablets (e.g., iPads) were being used to support supervising doctors and medical students; and spaced repetition in mobile learning games. [Note: (1) The title of the proceedings on the cover page differs from the title shown via the URL; and (2) The cover page of the proceedings shows Theo Bastiaens as the editor and Jon Dron and Sanjaya Mishra as conference program co-chairs. For the E-Learn 2016 proceedings, see ED604107.]