Transaction in Own Shares

Rio Tinto PLC
31 May 2007


Rio Tinto plc
Transaction in Own Shares
31 May 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:                                      31 May 2007

Number of ordinary shares transferred:                 10,489

Highest transfer price per share:                      1458.6p

Lowest transfer price per share:                       1458.6p


Following the above purchase, Rio Tinto plc holds 70,357,624 ordinary shares as
treasury shares.  The total number of ordinary shares in issue (excluding shares
held as treasury shares) is 1,001,414,172.


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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