The restaurant on Huntriss Row is closed until work is carried out to repair the roof.
A spokesperson for Pizza Hut said: "The Hut closed on March 11 and we’re expecting it to re-open in the coming weeks once building work has been completed.
"Customers can continue to enjoy their favourite pizzas delivered from our Ramshill Road Hut located less than a mile away."
A sign on the door says the nearest Pizza Hut restaurant is at Monks Cross, York.