Michael Gerard L'Estrange AO (born 12 October 1952 in North Sydney, New South Wales) is an Australian academic and former public servant.

L'Estrange had earlier served a long career in the Australian public service including as a diplomat and as Secretary of the Department of Foreign Affairs and Trade.

He went on to win a Rhodes Scholarship in 1975, studying Philosophy, Politics, and Economics at Worcester College, Oxford, graduating in 1979 with first class honours.

After this fellowship, he worked as a policy adviser to Australian Liberal Party leaders between 1989 and 1994, and became the executive director of the Menzies Research Centre, a conservative think tank, in 1995.

L’Estrange wrote an internal review of the decision to destroy the Juukan Gorge site, which was criticised by Australian Senator Pat Dodson as an “unsatisfactory piece of work”[12] and by indigenous leader Noel Pearson as a "whitewash".