The Attorney General of Ontario is the chief legal adviser to His Majesty the King in Right of Ontario and, by extension, the Government of Ontario. The Attorney General is a senior member of the Executive Council of Ontario and oversees the Ministry of the Attorney General – the department responsible for the oversight of the justice system in the province of Ontario. The Attorney General is an elected Member of Provincial Parliament who is appointed by the Lieutenant Governor of Ontario on the constitutional advice of the Premier of Ontario.

The Government of Ontario is the body responsible for the administration of the Canadian province of Ontario. The term Government of Ontario refers specifically to the executive—political ministers of the Crown, appointed on the advice of the premier, and the non-partisan Ontario Public Service, who staff ministries and agencies to deliver government policies, programs, and services—which corporately brands itself as the Government of Ontario, or more formally, His Majesty's Government of Ontario.