Principal Secretary (Canada)

In Canada the Principal Secretary is a senior aide, often the most senior political aide, to a head of government. Formerly the position of Principal Secretary was the most senior in the Canadian Prime Minister's Office, though since 1987 it is second to the Chief of Staff. The Leader of the Official Opposition and most Canadian provincial Premiers also have a principal secretary.
List of Principal Secretaries

Vacant since 2013
Ray Novak 2008–2013
Francis Fox 2004–2006
Jean Riou 1993
Michel Roy, as Senior Advisor 1992–1993
Hugh Segal, as Senior Advisor 1991–1992
Tom Trbovich, Senior Policy Advisor 1990–1991
Bruce Phillips, Senior Advisor 1989–1990
Peter G. White 1988–1989
Bernard A. Roy 1984–1988
John Swift 1984–1984
Tom Axworthy 1981–1984
James A. Coutts 1975–1979, 1980–1981
William Neville, Chief of Staff 1979–1980
Martin O'Connell
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