WRKYgene family is one of the largest transcription factor families involved in various physiological processes of plants. Flax (Linum usitatissimum) is an important stem fiber crop, and it is also an economically important crop in natural fiber and textile industries around the world. In this study, 105WRKYgenes were obtained by screening the whole genome of flax. There were 26 in group I, 68 in group II, 8 in group III and 3 in group UN. The characteristics of the WRKY motif and gene structure in each group are similar. The promoter sequence ofWRKYgenes includes photoresponsive elements, core regulatory elements and 12 cis-acting elements under abiotic stress. Similar toA. thalianaandCompositaeplants,WRKYgenes are evenly distributed on each chromosome, with segmental and tandem repeated events, which play a major role in the evolution ofWRKYgenes. The flaxWRKYgene family is mainly concentrated in group I and group II. This study is mainly based on genome-wide information to classify and analyze the flaxWRKYgene family, laying a foundation for further understanding the role of WRKY transcription factors in species evolution and functional analysis.