Medical staff posted about his recovery online and it has received thousands of likes.
Keith Watson was admitted to the Alexandra Hospital in Redditch for surgery last month and tested positive for COVID-19.
But he was discharged on Wednesday and a post celebrating the recovery from the Worcestershire Acute Hospitals NHS Trust has been shared thousands of times on Facebook and Twitter.
It said: "This is Keith, he's 101 years old.
"He went home today after beating Coronavirus.
"Well done to everyone on Ward 12 at the Alexandra Hospital for looking after Keith so well for the past two weeks!"
Mr Watson's daughter-in-law Jo Watson told the BBC the reaction had been "a bit mad".