In this study, the aim was to study the oxygen delignification and bleaching processes of hemp pulps obtained via kraft pulping. Hemp stalks and wood were delignified by the pulping process to a kappa number of approximately 25, i.e. the same as birch pulp. The pulps obtained were subsequently subjected to oxygen delignification in conditions differing only in terms of the amount of NaOH added. The results of these experi- ments are presented in Figure 1, which also shows results of the oxygen delig- nification of birch- and pine pulps for comparison.