David Caldicott is an Irish emergency medicine consultant at the Emergency Department of the Calvary Hospital in Canberra, Australian Capital Territory. He was the convenor of the OzTox Collaboration, an independent multidisciplinary, hospital-based research group committed to a harm minimisation approach to illicit drug use.
Caldicott has been an outspoken critic of politicians supporting "zero-tolerance" and prohibitionist drugs policy, questioning the evidence of their efficacy in preventing morbidity and mortality from illicit substances.
David Gerald Edward Caldicott was born in the Republic of Ireland. He attended the National University of Ireland in Dublin, Republic of Ireland, graduating with a Bachelor of Science with Honours in 1990, and the University of London in London, the United Kingdom, graduating in 1995.
Caldicott completed his Fellowship of the College of Emergency Medicine in 2011. Caldicott completed a Diploma of Clinical Toxicology at the University of Wales in 2014.
Caldicott is one of the founding members of The List, a politically independent group of experts committed to maintaining the truth on illicit drug debate in the Australian media. The List promised to monitor the media on drugs policy issues in the run up to the Australian federal general election in 2007. He is on the expert database for the Australian Science Media Centre on issues of illicit drug use and medical response to disasters.