The Secretary of the Cabinet is the Premier’s Deputy Minister, the Head of the Ontario Public Service and the Clerk of the Executive Council. Ontario’s first Secretary of the Cabinet, Lorne McDonald, was appointed in 1948. The current Secretary of the Cabinet, Michelle E. DiEmanuele, was appointed in 2021.

Previous Secretaries of the Ontario Cabinet

Lorne McDonald

Lorne McDonald

October 1948 – November 1953

William McIntyre

William McIntyre

December 1953 – February 1969

John K. Reynolds

John K. Reynolds

March 1969 – April 1971

Carl E. Brannan

Carl E. Brannan

May 1971 – November 1973

James D. Fleck

James D. Fleck

January 1974 – December 1975

Dr. Edward E. Stewart

Dr. Edward E. Stewart

January 1976 – July 1985

Robert C. Carman

Robert C. Carman

July 1985 – September 1989

Peter Barnes

Peter Barnes

September 1989 – September 1992

David Agnew

David Agnew

September 1992 – June 1995

Rita Burak

Rita Burak

June 1995 – June 2000

Andromache Karakatsanis

Andromache Karakatsanis

June 2000 – November 2002

Tony Dean

Tony Dean

November 2002 – January 2008

Shelly Jamieson

Shelly Jamieson

January 2008 – December 2011

Peter Wallace

Peter Wallace

December 2011 – July 2014

Steve Orsini

Steve Orsini

July 2014 – January 2019

Steven Davidson

Steven Davidson

January 2019 – June 2021