"It is with great sadness that we announce the death of our dear father, Captain Sir Tom Moore," his daughters said in a statement.
The 100-year-old, who raised almost £33m for the National Health Service (NHS), was taken to Bedford Hospital after requiring help with his breathing on Sunday.
His daughter Hannah Ingram-Moore said he had been treated for pneumonia over the past few weeks and last week tested positive for Covid-19.
He had not been vaccinated against Covid-19 due to the other medication he was taking.
