In the Austrian Alps, comprehensive datasets linking spring locations to their catchments remain scarce. This dataset therefore presents an assemblage of 70 alpine spring catchments in Austria. All springs in this dataset belong to the official monitoring network of the Austrian Hydrographic Service (www.ehyd.gv.at). However, their catchment delineations are still absent. Spring locations are sourced from the Austrian Hydrographic Service and refined using field observations and literature. The aim of this dataset is to provide plausible catchments for these springs using a water-balance-based modelling approach. Catchment delineations are performed by first generating several candidate catchments for each spring and subsequently identifying the most plausible delineation using a rainfall–runoff model (GR4J) coupled with a snow module (Cemaneige). The model is forced using daily 1 km input data for precipitation, air temperature, and potential evapotranspiration provided by Geosphere Austria (SPARTACUS, ARET/WINFORE). Model calibration was conducted using daily observed discharge data and daily 500 m resolution remote sensing snow cover data (MODIS). The selection of the most plausible catchment is based on various model performance metrics (e.g., KGE, logKGE, sqrtKGE), supported by documented tracer test data and verified by expert knowledge. For each spring the most plausible catchment delineation is provided in the dataset. It is uniquely identified by a dedicated ID (HZBNR) and the corresponding spring name, following the labelling conventions of Austrian authorities. Furthermore, each catchment is accompanied by detailed attribute information, including area; minimum, maximum, and mean elevation derived from a 10 m resolution digital elevation model; land-cover classes based on CORINE Land Cover 2018; and geological lithologies from the Hydrogeological Map of Austria (1:500 000). Overall, the catchments encompass 18 standardized land-cover classes (LC) and 24 distinct lithologies. Catchment mean elevations range from 493 m a.s.l. up to 2531 m a.s.l. and cover a total area of 493 km2. The dataset is intended to support hydrogeological and environmental analyses, as well as model development and comparative catchment studies, by providing catchment shapefiles in ETRS89/Austria Lambert (EPSG: 3416) together with associated static attributes.