His Majesty's Inspectorate of Constabulary in Scotland was established by the Police (Scotland) Act 1857.
List of Chief Inspectors:
Colonel John Grant Kinloch, 1857-1872
Charles Carnegie, 1872-1884
David Monro, 1884-1904
Arthur George Ferguson, 1904-1927
William David Allan, 1927-1930
Robert Maxwell Dudgeon, 1930-1945
Sidney Anderson Kinnear, 1946-1957
Thomas Renfrew, 1958-1966
Andrew Meldrum, 1966-1969
David Gray, 1970-1979
Edward Frizzell, 1979-1983
Alexander Morrison, 1983-1988
Robert Sim, 1988-1989
Colin Sampson, 1990-1992
John MacInnes Boyd, 1993-1996
William George MacKenzie Sutherland, 1996-1998
William Taylor, 1999-2001
Hugh Roy Graham Cameron, 2002-2004
Andrew Gibson Brown, 2004-2007
Paddy Tomkins, 2007-2009
Bill Skelly, 2009-2010
Andrew Laing, 2010-2013
George Graham, 2013-2014
Derek Penman, 2014-2018
Gill Imery, 2018-2022
Craig Naylor, 2022-