Michael Douglas Crisp (born 1950) is an emeritus professor in the Research School of Biology at the Australian National University located in Canberra.

In 1976, he gained a PhD from the University of Adelaide, studying long-term vegetation changes in arid zones of South Australia.

In 2020, Crisp moved to Brisbane, where he has an honorary position at the University of Queensland.

[1] Together with colleagues, he revised various pea-flowered legume genera (Daviesia,[2] Gastrolobium,[3] Gompholobium,[4] Pultenaea[5] and Jacksonia).

[6] He has made considerable contributions to biogeography,[7][8][9][10] phylogeny[11][12][13] and plant evolution.