Polytheistic peoples from many cultures have postulated a thunder deity, the creator or personification of the forces of thunder and lightning; a lightning god does not have a typical depiction and will vary based on the culture.
In Indo-European cultures, the thunder god is frequently depicted as male and known as the chief or King of the Gods, e.g.: Indra in Hinduism, Zeus in Greek mythology, Zojz in Albanian mythology, and Perun in ancient Slavic religion.
Thor (from Old Norse: Þórr) is a prominent god in Germanic paganism. In Norse mythology, he is a hammer-wielding god associated with thunder, storms, strength, protection, fertility, farmers, and free people. Besides Old Norse Þórr, the deity occurs in Old English as Thunor, in Old Frisian as Thuner, in Old Saxon as Thunar, and in Old High German as Donar, all ultimately stemming from the Proto-Germanic theonym *Þun(a)raz, meaning 'Thunder'.
Thor is a prominently mentioned god throughout the recorded history of the Germanic peoples, from the Roman occupation of regions of Germania, to the Germanic expansions of the Migration Period, to his high popularity during the Viking Age, when, in the face of the process of the Christianization of Scandinavia, emblems of his hammer, Mjölnir, were worn and Norse pagan personal names containing the name of the god bear witness to his popularity.