The World War Two veteran raised a record 33 million pounds ($41 million) by walking 100 laps of his garden with the aid of a walking frame in April in the run-up to his landmark birthday.
At an open-air investiture at Windsor Castle, the 94-year-old queen smiled as she dubbed Moore on both shoulders with her knighting sword, which previously belonged to her father, George VI.
Moore, in a dark suit, stood holding onto a wheeled walking frame.
The Yorkshireman became a symbol of British endurance in the face of the adversity of the coronavirus crisis and cheered many with his promise that "the sun will shine again."
Moore, who served in India, Burma and Sumatra during World War Two, quipped earlier this year that having a knighthood would be funny because he would be Sir Thomas Moore - a reference to the Tudor statesman Sir Thomas More.

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