Over 70 Romanian physicists and engineers work on CERN projects. Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering participates in three LHC experiments (ATLAS, ALICE and LHCb), to the construction of detectors and data analysis. A group of scientists and students of the Politehnica University of Bucharest is involved in the advanced development of information technology at CERN. Prestigious scientific Romanian institutions such as the Institute for Space Sciences, the NIRD for Isotopic and Molecular Technology, and Universities from Brasov (UTB), Iasi (UAIC) and Timisoara (UVT) also contribute to fundamental physics experiments at CERN.
- 1991 - first Agreement, ensuring the participation of Romanian research and industry in CERN programs
- 2002 - an Agreement of cooperation was concluded between the Romanian Government and CERN, referring to the future development of scientific and technical cooperation within the research projects
- 2004 - the establishment of the National Committee Romania - CERN, which coordinates the development of the collaboration between Romanian research institutions and CERN
- 2006 - the Memorandum of Understanding for collaboration in the deployment and exploitation of the Worldwide LHC Computing Grid was signed; accordingly, Romania is represented in the WLCG collaboration by RO-LCG.
- 2010 - Agreement that formally recognises Romania as a candidate for accession to membership of CERN.
- 2016 - admission of Romania as full CERN member.