Abstract: The KM3NeT research infrastructure is currently being established. It will consist of a network of deep-sea neutrino detectors to answer fundamental questions both in particle physics and astrophysics. The complexity and volume of the generated datasets is a challenge for analysis and archival of the data, and requires significant computing resources. The KM3NeT collaboration adopts a tier-like computing model for data management. The KM3NeT data management plan and computing model is presented, and plans for public data with open access are discussed.