Transaction in Own Shares

Rio Tinto PLC
12 April 2007

Rio Tinto plc

Transaction in Own Shares

12 April 2007



Rio Tinto plc announces today that it has transferred to participants in its
employee share schemes the following number of its ordinary shares of 10p each,
which were previously held as treasury shares.



Ordinary Shares



Date of transfer:                                   12 April 2007

Number of ordinary shares transferred:              9,772

Highest transfer price per share:                   1263p

Lowest transfer price per share:                    1263p



Following the above purchase, Rio Tinto plc holds 66,137,883 ordinary shares as
treasury shares.  The total number of ordinary shares in issue (excluding shares
held as treasury shares) is 1,005,617,261.



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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