This dataset comprises two .csv files (containing archaeobotanical results) from two separate Bronze Age round house sites in southern Ireland (Mitchelstown and Ballynamona). It also comprises a .pdf file containing the text of a research report detailing the methodology, results and an interpretation of the archaeobotanical material from these two sites. This data was collated after archaeobotanical analysis of samples from the sites. It can be re-used as comparative material in research examining archaeobotanical datasets from Bronze Age sites in Ireland and beyond.