The Harry Potter star
Pattinson, 24, is placed two spots ahead of Knightley, whose $48 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.
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.