Waves in landfast ice data obtained outside of the Casey station from the Australian Antarctic Program, projects 4593 and 4506. The wave measurements were obtained by instruments deployed on the ice. For more information about the deployment, see: Voermans, J. (2021) Wave-ice interactions collected on landfast ice near Casey Station, 2020. Data are reproduced here, but primary hosting is taking place at https://data.aad.gov.au/metadata/records/AAS_4593_IB_2020_Casey . The data presented here are created, stored, and quality checked using the code available at: https://github.com/jerabaul29/data_release_sea_ice_drift_waves_in_ice_marginal_ice_zone_2022/tree/master/Data/2020_November_Antarctic_Casey . More data may be available at the data.aad.gov.au website and in the github repo than in this nc file. Please discuss any question / issue about the present data inside the issue tracker of the github repository.