Across artificial intelligence, climate change, food safety, transport and communications, the fields of STEM (science, technology, engineering and mathematics) are integral to modern society. Drawn from the Dictionary of Irish Biography, these forty – six lives bring together natural philosophers, mathematicians, engineers, particle physicists, code breakers and many more. Celebrating the diversity of STEM in Ireland, from the development of the ‘scientific method’ in the circle surrounding Robert Boyle through to the large-scale particle physics experiments undertaken by John Stewart Bell and Anne Kernan at CERN, Irish STEM lives traces the pursuit of knowledge over the past four centuries. EDITED BY Turlough O’Riordan and Jane Grimson