linguistic:paraphrasing, structural:expansion
Viking age

In the 11th century, chronicler Adam of Bremen records in his Gesta Hammaburgensis Ecclesiae Pontificum that a statue of Thor, who Adam describes as "mightiest", sits in the Temple at Uppsala in the center of a triple throne (flanked by Woden and "Fricco") located in Gamla Uppsala, Sweden. Adam details that "Thor, they reckon, rules the sky; he governs thunder and lightning, winds and storms, fine weather and fertility" and that "Thor, with his mace, looks like Jupiter". Adam details that the people of Uppsala had appointed priests to each of the gods, and that the priests were to offer up sacrifices. In Thor's case, he continues, these sacrifices were done when plague or famine threatened. Earlier in the same work, Adam relays that in 1030 an English preacher, Wulfred, was lynched by assembled Germanic pagans for "profaning" a representation of Thor.

Two objects with runic inscriptions invoking Thor date from the 11th century, one from England and one from Sweden. The first, the Canterbury Charm from Canterbury, England, calls upon Thor to heal a wound by banishing a thurs. The second, the Kvinneby amulet, invokes protection by both Thor and his hammer.

On four (or possibly five) runestones, an invocation to Thor appears that reads "May Thor hallow (these runes /this monument)!" The invocation appears thrice in Denmark (DR 110, DR 209, and DR 220), and a single time in Västergötland (VG 150), Sweden. A fifth appearance may possibly occur on a runestone found in Södermanland, Sweden (Sö 140), but the reading is contested.

Pictorial representations of Thor's hammer appear on a total of five runestones found in Denmark (DR 26 and DR 120) and in the Swedish counties of Västergötland (VG 113) and Södermanland (Sö 86 and Sö 111). It is also seen on runestone DR 48. The design is believed to be a heathen response to Christian runestones, which often have a cross at the centre. One of the stones, Sö 86, shows a face or mask above the hammer. Anders Hultgård has argued that this is the face of Thor. At least three stones depict Thor fishing for the serpent Jörmungandr: the Hørdum stone in Thy, Denmark, the Altuna Runestone in Altuna, Sweden and the Gosforth Cross in Gosforth, England. Sune Lindqvist argued in the 1930s that the image stone Ardre VIII on Gotland depicts two scenes from the story: Thor ripping the head of Hymir's ox and Thor and Hymir in the boat, but this has been disputed.