Yannis Velegrakis is a professor of Computer Science at Utrecht University, where he who holds the chair of Very Large Data Management and leads the Data Intensive Systems Lab. He is also an associate professor at the University of Trento, and coordinator of its EIT Digital Data Science Master.

His research area of expertise includes Big Data Understanding, Social Data Analysis, Knowledge Discovery, Big Data Management & Analytics, Highly Heterogeneous Information Integration & Data Exchange, User-centric Querying Techniques for Massive Heterogeneous Datasets, Personalization & Recommendation, and Data Quality.

He holds a PhD degree from the University of Toronto and a MSc. and BSc. degree from the University of Crete, all in Computer Science. In the past he has been a researcher at the AT&T Research Labs. He has also spent time as a visitor at the IBM Almaden Research Center, the Center of Advanced Studies of the IBM Toronto Lab, University of California, Santa-Cruz, and the University of Paris-Saclay. He has served in program committees of many national and international conferences and has been a reviewer for numerous international journals. In 2013, he served as the general chair of VLDB.