Data protection authorities have collectively been at the forefront of assessing the impacts of new technologies on fundamental rights, naturally emerging as strong contenders for the role as Market Surveillance Authorities under the AI Act. With the deadline to appoint Market Surveillance Authorities approaching in August 2025, this panel aims to identify lessons learned from data protection authorities’ experience in ensuring effective remedies for data protection harms which could be applied to the AI Act’s market surveillance framework. The panel will identify the different enforcement needs for AI harms as opposed to solely data protection harms, compare and contrast the governing frameworks for data protection and market surveillance authorities and how these regulators have traditionally fulfilled their roles, and discuss how best civil society and fundamental rights authorities may support and collaborate with them.