This paper explores citizenship requirements for entry to practice regulated professions historically in four Canadian provinces. It reviews how common citizenship restrictions have been in Canadian professions, when and where they were implemented, and what rationales were provided for these restrictions. Findings provide support for both Weberian social closure theory which sees such restrictions as the product of professional lobbying, and state‐centred explanations which hold that states regulate professions to facilitate governance. Many citizenship restrictions were historically implemented by state actors. The decline of citizenship restrictions reflects not only changing social attitudes, but changes in state‐profession relations in Canada.