The Provincial Secretary and Registrar of Ontario was a senior position in the provincial cabinet of Ontario from before Canadian Confederation until the 1960s. The Provincial Secretary and Registrar was originally the second highest position in the provincial cabinet, equivalent to the position of Deputy Premier. The Provincial Secretary was the equivalent of the former Canadian Cabinet position of Secretary of State for Canada. Like its federal counterpart it included an eclectic variety of responsibilities that were not assigned to other ministers, most of which would eventually evolve into portfolios of their own. The provincial secretary was also responsible for official communications between the provincial government and the Colonial Office in London as well as with other provincial