BERT and RoBERTa in R: Transformer-Based NLP. Version 2026.03.28. The Language Technology and Data Analysis Laboratory (LADAL), The University of Queensland, Australia. Available at: https://ladal.edu.au/tutorials/rbert/rbert.html. This tutorial is part of the Language Technology and Data Analysis Laboratory (LADAL), a free, open-access research infrastructure at the University of Queensland. LADAL provides tutorials, tools, and courses for researchers working with language data. All materials are freely available at https://ladal.edu.au and are part of the Language Data Commons of Australia (LDaCA), funded by ARDC and NCRIS.