AbstractMetal phosphides have triggered growing interest for their exotic structures and striking properties. Hence, within advanced structure search and first‐principle calculations, several unprecedented Y−P compounds (e. g., Y₃P, Y₂P, Y₃P₂, Y₂P₃, YP₂, and YP₃) were identified under compression. Interestingly, as phosphorus content increases, P atoms exhibit diverse behaviors corresponding to standalone anion, dumbbell, zigzag chain, planar sheet, crossing chain‐like network, buckled layer, three‐dimensional framework, and wrinkled layer. Particularly, Fd‐3m YP₂ can be viewed as assemblage of diamond‐like Y structure and rare vertex‐sharing tetrahedral P₄ units. Impressively, electron‐phonon coupling (EPC) calculations elucidate that Pm‐3m Y₃P possesses the highest superconducting critical temperature T_c of 10.2 K among binary transition metal phosphides. Remarkably, the EPC of Pm‐3m Y₃P mainly arises from the contribution of low‐frequency soft phonon modes, whereas mid‐frequency phonon modes of Fd‐3m YP₂ dominate. These results strengthen knowledge of metal phosphides and pave a way for seeking superconductive transition metal phosphides.