Supplementary material “SASSIER22: Full-waveform tomography of the eastern Indonesian region that includes surface topography and the fluid ocean” by Wehner, D., Rawlinson, N., Greenfield, T., Daryono, Miller, M.S., Supendi, P., Lü, ChuanChuan and Widiyantoro, S., for publication in Geochemistry, Geophysics, Geosystems. The material contains: Folder 1 MODELS Absolute values of the starting model for the SASSIER22 inversion and both final models (ocean layer — SASSIER22 — and ocean load inversion) as NetCDFs and HDF5 files, with the former being readable by e.g. xarray and the latter suitable for viewing with ParaView and interaction with Salvus. Folder 2 DATA The observed data (filtered and windowed) in MSEED format. Note that this data is provided for reproduction purposes only. The following additional information is provided in the Zenodo repository of Wehner et al. (2021), which can be found here. A Jupyter Notebook (MWE_data_processing.ipynb) that demonstrates the processing steps for the observed waveforms of an event used in the SASSY21 inversion (20181229_033914). A Jupyter Notebook (embrace_the_sass.ipynb) with a minimum working example on how to interact with the file formats mentioned above.