The "Harry Potter" star's fortune of £76.8 million (£48 million) puts him at number five in The Sunday Times' list of the 50 Richest Young People 2011, ahead of "Twilight"'s Pattinson, who takes the joint number eight spot with earnings of $51.2 million (£32 million).
Pattinson, 24, is placed two spots ahead of Knightley, whose $48 million (£30 million) bank balance puts her at number 10.
Radcliffe's "Harry Potter" co-stars Emma Watson and Rupert Grint are tied at 13 with $38.4 million (£24 million).
Other famous faces to make the list include British royals Princes William and Harry at 12, pop stars Cheryl Cole, Katie Melua and Leona Lewis, who are ranked joint 22nd, ahead of Adele and Lily Allen, who are tied at 35.
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