Abstract: Three species of sawflies new to science are described in the present paper. Typespecimens are deposited in the insect collection of the Forest Research Institute, the Chinese Academy of Forestry, Beijing, China.1. Nesodiprion yananieus Huang et Zhou sp. nov.This species resembles N.japonieus(Marlatt),but differs from the latter in having the ventral lobes of the 2nd and 3rd annuli smaller, the 3rd annulus being parallel to the 4th, the pseudocepal thickening slightly depressed, the valviceps almost forming a right angle.Holotype: ♀, Shanxi province.Allotype: ♂, the same as for the holotype.Paratype: 2♀, 1♂, the same as for the holotype.2. Nesodiprion zhejiangensis Zhou et Xiao sp. nov.This species differs from N. japonicus (Marlatt) in having the pseudocepal thickening slightly depsessed, the valviceps forming and the 2nd sclerora each forming a right angle.Holotype: ♀, Hangzhou, Zhejiang Province.Allotype: ♂, the same as for the holotype.Paratype: 15♀, 50♂, the same as for the holotype.3. Nesodiprion huanglongshanious Xiao et Huang sp. nov.Nearest to N. japonicus (Marlatt), but distinguished at the ventral lobe of the 2nd annulus large and almost in quardrate shape, the pseudocepal thickening being rather flat, the valviceps forming a right angle.Holotype: ♀, Huanglongshan, Shanxi Province.Allotype: ♂, the same as for the holotype.Paratype: 11♀, 10♂, the same for the holotype.