Geoffrey Colin Harcourt AC (27 June 1931 – 7 December 2021) was an Australian academic economist and leading member of the post-Keynesian school.

(He was a University Lecturer at Cambridge and a Fellow of Trinity Hall 1964–66, on leave without pay from Adelaide).

Harcourt made major contributions to the understanding of the ideas of Keynes, Joan Robinson and other Cambridge economists.

A review article[2] of one of his volumes of 'Selected Essays' argues that (i) insofar as he has written on capital theory, it has been as an innovator and not as a mere raconteur, and (ii) that he has developed his own suite of post-Keynesian models – this is evident, for example, in his 1965 paper "A two-sector model of the distribution of income and the level of employment in the short-run"[3] which is reprinted in The Social Science Imperialists: Selected Essays of G.C.

He was married to Joan Harcourt and they had four children: Wendy Harcourt, a full professor at the International Institute of Social Studies of Erasmus University Rotterdam[4] (married to Claudio Sardoni, honorary professor at La Sapienza University of Rome, with two children, Caterina Sardoni and Emma Claire Sardoni); Robert Harcourt, a marine ecology professor at Macquarie University; Tim Harcourt, also an economist[5] (married to Jo Bosben); and Rebecca Harcourt, program manager for Indigenous business education at the University of New South Wales.