Transaction in Own Shares

Rio Tinto PLC
07 December 2006




Rio Tinto plc announces that on 7 December 2006 it purchased for cancellation
350,000 of its ordinary shares from JP Morgan Cazenove Limited at a price of
2811.2065p per share.



Following this cancellation the total number of ordinary shares in issue
(excluding shares held as treasury shares) is 1,026,147,008



For further information, please contact:



Investor Relations



Nigel Jones



Office: [phone]



Mobile: [phone]



Secretarial Department



Matthew Whyte



Office: [phone]



Website: www.riotinto.com




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