Full edition for scientific use. The Treaty on the Non-Proliferation of Nuclear Weapons (Nuclear Non-Proliferation Treaty, NPT) is the central regime within the global nuclear order. According to Art. VIII of the treaty, state parties have to meet in intervals of five years to review its operation. The NPT Review Conferences Dataset is a collection of 2959 statements from these quinquennial Review Conferences (RevCon) and their respective Committees (PrepCom). It includes data from 4 RevCons (2000, 2005, 2010, 2015) and 12 PrepComs (2002, 2003, 2004, 2007, 2008, 2009, 2012, 2013, 2014, 2017, 2018, and 2019). In addition, it includes data on attendance and delegation size at all RevCons and PrepComs from 1975 through 2022.