Greg Constantine is a documentary photographer who works almost exclusively on projects that focus on human rights, injustice and inequality. In 2005, he moved to Asia and began work on his long-term project, Nowhere People, which documents the struggles and plight of stateless communities around the world. Constantine spent over eleven years documenting stateless communities from Bangladesh, Myanmar, Nepal, Malaysia, Sri Lanka, Kenya, Ivory Coast, Dominican Republic, Ukraine, Serbia, Italy, Holland, UK, Iraq, Kuwait and Lebanon.   

His work has been featured in the New York Times, International Herald Tribune, Newsweek, The New Republic, The Atlantic, South China Morning Post, The Economist, Wall Street Journal, Mother Jones, Virginia Quarterly Review, Internazionale, CNN and Al-Jazeera. His work has been recognized in Pictures of the Year International, NPPA Best of Photojournalism, the Human Rights Press Awards (Hong Kong), the Society of Publishers in Asia, Days Japan, Allard Prize for Photography, International Photography Awards, Prix de la Photographie and the Harry Chapin Media Award for Photojournalism. Constantine was part of a team of journalists from the International Herald Tribune who received the Osborn Elliot Prize for Journalism in Asia in 2009, presented annually by the Asia Society.  In 2011, he was shortlisted for the Amnesty International Media Award for Photojournalism in the UK. He is a recipient of an Audience Engagement Grant from the Open Society Foundations (OSF) and was also selected by the Documentary Photography Project at OSF for the prestigious group exhibition, Moving Walls 19.  He has received grants from the Pulitzer Center on Crisis Reporting, The Oak Foundation, the National Endowment for Democracy, Sigrid Rausing Trust and the Four Freedoms Fund.  Since 2006, his work has also been supported through the non-profit fiscal sponsorship of Blue Earth Alliance.

He has collaborated and has been commissioned to work on projects with international organizations such as: UNHCR, Human Rights Watch, Amnesty International, Refugees International, Medecins Sans Frontieres, World Food Program, the European Network on Statelessness, the International Detention Coalition and the Simon Skjodt Center for the Prevention of Genocide.

A series of inter-related books from the project Nowhere People was launched in 2011. The first book in the series was  Kenya’s Nubians: Then & Now.  The second in the series was Exiled To Nowhere: Burma’s Rohingya which was named a 2012 Notable Photo Book of the Year by the Independent on Sunday in the UK and PDN Magazine in the US and was named a finalist for the 2013 IPA Photo Book Asia Award.  The third book in the series, Nowhere People was released in early November 2015 and was named a 2015 Notable Photo Book of the Year by the editors of PDN Magazine and one of the Top Ten Photo Books of 2015 by Mother Jones Magazine. In addition, in 2012 an eBook, In Seach of Home, was published by the Pulitzer Center on Crisis Reporting.

Exhibitions of his work related to global statelessness have been shown in over 50 cities including: Saatchi Gallery, Royal Albert Hall and HOST Gallery in London, BBVA Bank Gallery in Madrid, Palace of Fine Arts in Budapest, Department of Justice in Dublin, Palais des Nations and Plaine de Plainpalais in Geneva, European Parliament in Brussels, Philippines Cultural Centre in Manila, Customs House in Sydney, Kenya National Museume in Nairobi, The US Capitol, Kennedy Center and the US Holocaust Museum in Washington DC, at the UN Headquarters and powerHouse Arena in NYC and at the Peace Palace in The Hague during the 1st Global Forum on Statelessness held in 2014.

In 2015, he received a Distinguished Visiting Fellowship at Queen Mary University of London in collaboration with the International State Crime Initiative. He has given lectures and presentation of his work on statelessness to students at more than twenty universities and schools in Asia, Europe and the United States.  In early 2016 he spoke about statelessness and his project Nowhere People at TEDxEastEnd in London. 

In late 2016, he received his PhD from Middlesex University in the UK. Throughout 2018, he was an Independent Research Fellow with the Independent Social Research Foundation in the UK.