CDC Buryu, a late maturing oilseed flax (Linum usitatissimum L.), was registered in 2016 by the Crop Development Centre, University of Saskatchewan, Saskatoon, SK, Canada. This cultivar had a yield (106%) comparable to CDC Bethune and a maturity rating equal to Flanders in all soil zones of the northern prairies. The yield advantage over CDC Bethune was greater (>8%) in the Brown soil and Black soil zones of the northern prairies. It had medium oil content, oil quality, and seed size and good lodging resistance. It is immune to North American rust (race 371) caused by Melampsora lini (Ehrenb.) Thüm. and moderately resistant to wilt caused by Fusarium oxysporum Schltdl. f. sp. lini (Bolley) W.C. Snyder & H.N. Hansen and powdery mildew caused by Oidium lini.