The 2018 G20 Interfaith Forum took place 26–28 September 2018 in Buenos Aires, Argentina. This was the fifth annual event in a series of G20 interfaith fora held to coincide with the meetings of the international Group of Twenty Economic Summit. This year's G20 Summit will take place in Buenos Aires, from 30 November to 1 December. Previous interfaith fora have been held in Gold Coast, Australia (2014), Istanbul, Turkey (2015), Beijing, China (2016) and Potsdam, Germany (2017).

The Interfaith Forum aims to build a ‘network of networks’ of faith and interfaith leaders from around the world, together with non-governmental organisations and other policy leaders. Through three days of discussion and dialogue, the culmination of extensive prior consultations, participants highlight the roles that religious communities can play in promoting the goals of successive G20 economic summits. The Interfaith Forum draws on the expertise of a range of opinion leaders, including political leaders, academics, lawyers, and civil society leaders. It helps to identify and showcase the policy and societal contributions of faith traditions and philosophies on leading global issues. The aim is to develop recommendations on priority issues that draw on interfaith insight and experience, reflecting topics that the Argentine government had identified for this year's G20 Summit. The intention is to heighten the effectiveness of religious input on major global policy issues with recommendations and action geared to the achievement of the United Nations’ Sustainable Development Goals a key outcome.

The overarching theme for the 2018 G20 Interfaith Forum was ‘Building consensus for fair and sustainable development: religious contributions for a dignified future’. Lord Williams of Oystermouth, as Chair of the Board of Christian Aid, provided an insightful keynote presentation on responsibility rooted in common humanity. The stream of detailed study included modern slavery and human trafficking, while I led the group focusing on accommodating religion in the workplace. Our recommendations will feed into the G20 process this year in Argentina, and will be revisited next year when the event will be hosted in Japan.