Hrimthurs may refer to:
Hrimthur is another name for Jötunn, a race of giants in Norse mythology. Hrimthurs is any one of the particular tribe of giants who are made of ice and inhabit Niflheim, a land of eternal cold. Hrimthurs being the name of a person who built the walls around Asgard with aid of Svadilfari is actually a misconception, probably stemming from mistaking the tribal attribution of the builder for his name. The actual stonemason's name is uncertain. It is usually only stated that he was eventually revealed to be a hrimthurs. The word hrimthurs is a fusion of (h)rim rime + thurs giant).