Year
Commissioner
1975-1978
Edmund Garvey
Replaced (lost Government confidence)
1978-1983
Patrick McLaughlin
Retired (wiretap scandal)
1983-1987
Laurence Wren
Retired
1987-1988
Eamon Doherty
1988-1991
Eugene Crowley
1991-1996
Patrick Culligan
1996-2003
Patrick Byrne
2003-2007
Noel Conroy
2007-2010
Fachtna Murphy
2010-2014
Patrick Callinan
Retired (penalty points and GSOC bugging scandals)
2014-2017
Noirín O'Sullivan
Retired (whistleblower and breath testing scandals)
2017-2018
Dónall Ó Cualáin
Acting Commissioner
2018- present
Drew Harris