Primula weimingii Bin Yang & Y.H.Tan, a new species of Primulaceae from Yuanyang County, Yunnan Province, China, is described and illustrated. Morphological characters and phylogenetic analyses in our previous research support P. weimingii as a member of the P. sect. Obconicolisteri. Primula weimingii is characterized by having mostly creeping scape with a propagating function that terminates in a leaf rosette, carrying an umbel of 2–4 flowers, narrowly campanulate calyx, 5–7mm long, and corolla tube slightly longer than the calyx.