The 23-year-old picked up the prize at the MTV Movie Award for his portrayal of Draco Malfoy in Harry Potter and the Deathly Hallows Part 1.
He also won the same award last year for the same role in the previous film Harry Potter and the Half-Blood Prince.
During his acceptance speech, he said: 'Thank you very much, it's always exciting to be here. This is very cool. This will look very nice in my downstairs toilet.'
He later spoke to MTV News backstage at the show saying his downstairs toilet is actually an important place for the prize.
Felton said: 'It's kind of a prized place in my house, the downstairs toilet. Consider it an honour.'