We are delighted to welcome you at the site of the 23rd Conference on Organometallic Chemistry (EuCOMC XXIII) that will be held under the auspices of the European Association for Chemical and Molecular Sciences (EuCheMS). This event will take place in the center of Helsinki from 16 till 20 June 2019. The EuCOMC is organized every second year and has a now long standing tradition as an exchange platform for all aspects of organometallic chemistry and its applications. We intend to provide a valuable platform for scientific discussions as well as a stimulating meeting place encouraging a close partnership between delegates from academia and industry. Developments, achievements and prospects in all fields of organometallic chemistry will be presented in plenary presentations by distinguished and by young scientists, keynote lectures, as oral communications and posters in various sections. One of the interesting topics will be chemical conversion of CO2 to products of higher value and the sessions will be supported by The Nordic Consortium for CO2 Conversion (NordCO2). We invite you to discover more about the meeting on this website, which will be regularly updated with news about this conference. Later on, we will invite you to register and to submit your abstracts using our on-line systems. We are very much looking forward to meet you in Helsinki in 2019! On behalf of the organizing committee, Timo Repo and Helena Grennberg.