Web of Science now includes information on Open Access (OA) availability of publications using article-level information from OADOI. This offers interesting possibilities to analyze OA developments at various levels - in this case Dutch universities. See for example 'Open Access levels of Dutch universities 2010-2017' (Bosman 2017, DOI; 10.5281/zenodo.1120386) However, Web of Science currently labels all articles as gold OA that are detected as freely available from the publisher. No distinction is made between articles in gold open access journals, hybrid journals or subscription journals that make (some) articles freely available, but without a clear license for re-use (read-only). Such information is available through the OADOI API, though. This dataset uses detailed information available from the OADOI API to provide a breakdown of articles labeled as 'gold OA' in Web of Science. The following categories are distinguished (description taken from Piwowar at al., 2017, doi: 10.7287/peerj.preprints.3119v1) ... :