Andrew Katz is a lawyer who has been practising in open source and other open technologies for over 30 years. He is on the core drafting team of the CERN Open Hardware License, drafted the Solderpad Hardware License, and has advised companies, foundations, projects, academia and governments on open source and open technology issues worldwide.

He founded and runs the FOSS consultancy Orcro Limited, as well as continuing his legal practice as a consultant at leading London IP law firm Bristows LLP, where he heads the firm's open source specialist group.

He is heavily involved in the Linux Foundation's OpenChain project, where he heads the UK WorkGroup and the Education WorkGroup. He wrote the OpenChain template Open Source Policy, which has been translated into multiple languages.

He regularly speaks at conferences internationally, and his client base is worldwide. He is a visiting researcher on open technologies and standards at the University of Skövde in Sweden, and is visiting lecturer at Queen Mary, University of London. His work has been published by the Oxford University Press, Springer and the Edinburgh University Press. He is co-author (and lead of the open hardware section) of the major European Commission publication on the Impact of Open Source Software and Hardware on the European Union, published in 2021.