This volume contains the papers presented at the 22nd Canadian Conference on Arti?cial Intelligence (AI 2009). The conference was held in Kelowna, British Columbia, during May 25-27, 2009, and was collocated with the 35th Canadian Graphical Interface Conference and the 6th Canadian Conference on Computer and Robot Vision. The Program Committee received 63 submissions from across Canada and aroundtheworld.Eachsubmissionwasassignedtothreereviewers.TheProgram Committee selected 15 regular papers each of which was allocated 12 pages in the proceedings and a 30-minute presentation at the conference. We accepted 21 short papers among which two were withdrawn by the authors. Each short paper was allocated 4 pages in the proceedings, and was presented as a poster plus a 15-minute brief talk. Also included in the proceedings are eight student abstracts presented at the Graduate Student Symposium. The conference program featured three keynote presentations by Evgeniy Gabrilovich(YahooResearch), AlanMackworth(UniversityofBritishColumbia), and Jonathan Schae?er (University of Alberta). The one-page abstracts of their talks are also included in the proceedings. Two pre-conference symposiums, each with their own proceedings, were held onMay24,2009.TheSecondCanadianSemanticWeb WorkingSymposium was organized by Weichang Du and Harold Boley. The International Symposium on Teaching AI in Computing and Information Technology was organized by Sajid Hussain and Danny Silver.