The integrity of public authorities, an expression of their honesty and trustworthiness,
underpins good governance in public administration. It involves the incorporation of
values, rules and standards in the daily activities of the public sector. The aim of this
article is to present the relatively new concept of integrity as presented in recent OECD
research. As an additional aim, a cluster analysis provides insight into how the different
member states apply the rule of integrity by arranging countries into groups where the
similarities are the strongest. The analysis uses the k-means clustering algorithm to
identify trends in the specific attributes (variables) of integrity and similarities between
countries. The data used in the paper come from reports on integrity published by the
OECD.