Protein quality and functional properties of 219 hexaploid wheat landraces from nine different provinces in Iran were evaluated using SDS-sedimentation test and the mixograph. Significant differences in means for protein quality characteristics were observed among the provinces of origin, suggesting that selection of more accessions from provinces with higher means would be a worthwhile strategy for selecting valuable genetic resources. The landraces were found to represent a valuable genetic resource that could be used to develop new bread wheat cultivars with improved end-use quality traits.