This regolith material hand specimen atlas displays 246 images of 212 regolith samples which have been collected over the last 30 years by the authors, present and past Geological Survey of South Australia (GSSA) staff and members of the Cooperative Research Centre for Landscape Environments and Mineral Exploration (CRC LEME). The atlas provides a broad overview of a wide variety of in situ and transported regolith located across South Australia, which have formed from rocks of possible Archean to Quaternary age. The atlas also includes regolith examples from adjacent states. It illustrates the composition, fabric, structure and stratigraphy – where applicable – of dominantly in situ regolith, as well as cases of regolith with mixed origin and/or complex overprinting. The atlas aims to be a teaching, guidance and look-up tool for geologists, explorers and other parties interested in regolith, but is far from representing all types of regolith materials occurring in SA. Where available, further references and links to publications are provided. The hand specimens are grouped and described – where applicable – by regolith materials grouped according to regolith terminology and classification developed in the CRC LEME (Pain et al., 2007; Pain, 2008). Each hand specimen has been photographed, in some cases multiple times. The regolith material hand specimen collection is physically stored in the South Australia Drill Core Reference Library at the Tonsley Precinct and can be viewed upon request. Some samples shown in this atlas are privately owned and do not form part of the actual specimen collection held at Tonsley. However, they have been included here as they show important types of regolith material found in the State, and hence complement the GSSA collection.