The owners and shoppers were left shocked when around eighty sheep entered a store in St Anton and caused thousands of pounds of damage, the Daily Mail reported.
"We think one of them saw its reflection in a mirror and came in to investigate," a spokesman for the Intersport shop said.
"And being sheep, of course the rest of them decided to follow," the spokesman was quoted as saying by the paper.
Negotiations are currently under way between lawyers and the owner of the sheep over the cost of damage to stock within the shop.
This is not the first time an animal has entered a shop in Austria, the report said.
Last year, a cow invaded another branch of the sports store and has since become a star after she was featured in their television advertisements.
Her owner Hans Schroder had to foot a massive bill for everything she trampled or tried to eat.