David Cappo AO (born 2 November 1949) is an Australian social justice advocate and Roman Catholic priest with particular interest in mental health care in developing countries.

His policy achievements[6] in that role included: Cappo also served as an independent advisor to the Executive Committee of State Cabinet and a member of the South Australian Economic Development Board.

[10] Cappo was appointed Deputy Chair of the national Social Inclusion Board in 2008 by then Australian Prime Minister Kevin Rudd.

From 2012 to 2018, Cappo was a senior research fellow[18] in the School of Social and Policy Studies at Flinders University in South Australia.

In 2024, he was appointed an Adjunct Professor in the School of Arts and Sciences,[19] Notre Dame University, Fremantle WA Campus (20), where he focusses on models of social justice and human rights in low income countries.