During the era of synthesis of Shinto and Buddhism, Shirayamahimenokami was called either Hakusan-Daigongen, Hakusan-Myori-Gongen, or Hakusan-Myori-Bosatsu, and the honji-butsu (the original Buddhist divinity) was called the 11-faced Kannon (the Goddess of Mercy).
なお、神仏習合のなかでは白山比咩神は白山大権現、白山妙理権現、または白山妙理菩薩とされ、本地仏は十一面観音とされた。