David Sadleir

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Australian security intelligence director

David Sadleir

Nationality Australian
Occupation Public servant; intelligence director
Known for Director-General of Security, Australian Security Intelligence Organisation
27 April 1992 – 10 October 1996[1]
Predecessor John Moten

David Sadleir led the Australian Security Intelligence Organisation (ASIO) as director-general of security, from 1992 to 1996.[1]

Office held

David Sadleir — intelligence leadership
Office Start End Predecessor Successor Source
Director-General of Security, Australian Security Intelligence Organisation 27 April 1992 10 October 1996 John Moten Dennis Richardson [1]

ASIO leadership

David Sadleir succeeded John Moten as director-general of the Australian Security Intelligence Organisation in 1992. The agency’s published chronology records his term as 27 April 1992 to 10 October 1996. Dennis Richardson took over on 11 October 1996.[1]

Succession and historical setting

David Sadleir’s tenure followed the end of the Cold War and the earlier relocation of the Australian Security Intelligence Organisation to Canberra. John Blaxland’s account of the preceding period describes the relocation as a significant change in the organisation’s relationship to central government; his third volume of the official history ends in 1989, before Sadleir’s appointment.[1][2]

Notes

  1. ↑ 1.0 1.1 1.2 1.3 1.4 Australian Security Intelligence Organisation, Directors-General of Security, archived 12 February 2010, accessed 8 November 2026.
  2. ↑ John Blaxland, Australia’s Secret Cold War, The Sydney Institute, speech delivered 5 December 2016, accessed 8 November 2026.