Three wolf spiders (Lycosidae) from Northern Vietnam are described and illustrated, two of them being new species: Allotrochosina serpentina Wang & Li sp. nov. (♂♀) and Sinartoria hamata Wang & Li sp. nov. (♂). The female of Arctosa tangguoi Wang, Li & Zhang, 2021 is described for the first time. Detailed descriptions, diagnoses, photographs, and drawings of the two new species and the female of A. tangguoi are provided.