By any measure, 2018 was a historic year for data protection law with the coming into effect of the GDPR on 25 May 2018. Ireland plays an important role in the regulation and enforcement of data protection law and decisions of the Irish courts have had a disproportionate impact on European data protection jurisprudence. With the introduction of the one-stop-shop mechanism under the GDPR it is to be expected that this trend will continue in the years ahead. This briefing note highlights the key data protection legislative developments and Irish court decisions over the past year.