Transaction in Own Shares

Rio Tinto PLC
23 March 2007

Rio Tinto plc
Transaction in Own Shares
23 March 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:                           23 March 2007


Number of ordinary shares transferred:      7,911


Highest transfer price per share:           1263p


Lowest transfer price per share:            1263p



Following the above purchase, Rio Tinto plc holds 65,554,408 ordinary shares as
treasury shares.  The total number of ordinary shares in issue (excluding shares
held as treasury shares) is 1,006,189,328.




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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