The Geochemical Society and the European Association of Geochemistry established the honorary title of Geochemistry Fellow, to be bestowed upon outstanding scientists who have, over some years, made a major contribution to the field of geochemistry. Scientific excellence is a core value of both the Geochemical Society and European Association of Geochemistry, and it is our privilege, by rewarding it, to take a leading role in its definition. In awarding Geochemistry Fellows, our societies believe it is important to recognize the broad spectrum of scientific achievements that advance geochemistry.