In the past decade, pharmacist practice has evolved tremendously in Canada, but the scope of practice varies substantially from one province to another. To describe pharmacists' scopes of practice relevant to prescribing within various jurisdictions of Canada, using the prescribing model in Alberta (authors' province) as the reference point. This cross-sectional survey consisted of clinical scenarios for emergency prescribing, adapting or renewing a prescription, and initial-access prescribing for a chronic disease. Pharmacists were asked about their ability to administer injections and to order or access the results of laboratory tests, as well as certification and training requirements and reimbursement models. Thirteen pharmacists representing Canadian provinces other than Alberta were surveyed in late 2015, for comparison with Alberta. With specific reference to the scenarios presented, pharmacists were able to prescribe in an emergency in 9 of the 10 provinces, renew prescriptions in all provinces, and adapt prescriptions in 6 provinces. Three provinces required that pharmacists have collaborative practice agreements identifying a specific practice area in order to initiate a prescription for a chronic disease (with 6-12 pharmacists per province having such agreements). Alberta required pharmacists to have authorization, based on a detailed application, in order to initiate any provincially regulated drug (with about 1150 pharmacists having this authorization). Pharmacists were allowed to administer vaccines in 9 provinces, and 5 provinces allowed pharmacists to administer drugs by injection. Three provinces had systems in place for pharmacists to access laboratory test results, and 2 allowed pharmacists to order laboratory tests. Five provinces had government-reimbursed programs in place for select prescribing services; however, all 9 provinces with public vaccination programs reimbursed pharmacists for this service. Pharmacist prescribing differs among Canadian provinces. Although most provinces allow emergency prescribing and renewal or adaptation of prescriptions by pharmacists, only 4 provinces allow prescription initiation, with variable criteria and scope. Despite some progress to enhance patient flow through the health care system (e.g., by allowing pharmacists to extend prescriptions), further work should be pursued to harmonize clinical practices across Canada and to enable pharmacists to initiate and manage drug therapy.