The emergence of Lyme disease and the rapid geographical range expansion of certain tick species in Canada are important issues for public health authorities and the public in general. A citizen science project called eTick invites the public to participate in the monitoring of ticks in Canada by submitting tick photos via a mobile application or a web site (eTick.ca) for identification by trained personnel. The identification results (usually returned within 1 business day) appear in real time on a public interactive map so that visitors can visualize all entries for a specific area and/or examine individual submissions. All eTick products and services (application download, image identification, consultation of public data) are free of charge. Ten provinces are currently participating: BC, AB, SK, MB, ON, QC, NB, NS, NL, and PE, with Territories to be added soon.