CERN Courier is a bi-monthly trade magazine covering current developments in high-energy physics and related fields worldwide. It was established in 1959. From October 1998 to December 2024 the magazine was published by IOP Publishing on behalf of CERN. As of January 2025 the magazine is again published by CERN. Up to volume 45 no. 5 (2005) the magazine was published both in English and French. The French edition was published under the title Courrier CERN : Revue internationale de la physique des hautes énergies. Currently it is a single-language edition where articles are published either in French or English with an abstract in the other language, although most articles are in English. CERN Courier is distributed to member-state governments, institutes and laboratories affiliated with CERN, and to their personnel. As of 2019 the magazine is published bi-monthly, prior to this there were typically ten to twelve issues per year. The views expressed are not necessarily those of the CERN management.