EXHIBIT 99.8

Notice to ASX/LSE

8 April 2022

Shareholdings of persons discharging managerial responsibility (PDMR) / Key Management Personnel (KMP)

Rio Tinto plc notifies the London Stock Exchange (LSE) of PDMR interests in securities of Rio Tinto plc, in compliance with the EU Market Abuse Regulation. As part of its dual listed company structure, Rio Tinto voluntarily notifies the Australian Securities Exchange (ASX) of material dealings in Rio Tinto plc shares by PDMR/KMP and both the ASX and the LSE of material dealings by PDMR/KMP in Rio Tinto Limited securities.

On 7 April 2022, the following director purchased shares as follows:

Security	Name of PDMR/KMP	Number of shares acquired	Price per share AUD
Rio Tinto Limited	Dominic Barton	5,300	119.00

Notice to ASX/LSE     Page 1 of #NUM_PAGES#

Contacts	Please direct all enquiries to media.enquiries@riotinto.com
Media Relations, UK Illtud Harri M +44 7920 503 600 David Outhwaite M +44 7787 597 493 Media Relations, Americas Matthew Klar T +1 514 608 4429	Media Relations, Australia Jonathan Rose M +61 447 028 913 Matt Chambers M +61 433 525 739 Jesse Riseborough M +61 436 653 412
Investor Relations, UK Menno Sanderse M: +44 7825 195 178 David Ovington M +44 7920 010 978 Clare Peever M +44 7788 967 877	Investor Relations, Australia Amar Jambaa M +61 472 865 948
Rio Tinto plc 6 St James’s Square London SW1Y 4AD United Kingdom T +44 20 7781 2000 Registered in England No. 719885	Rio Tinto Limited Level 7, 360 Collins Street Melbourne 3000 Australia T +61 3 9283 3333 Registered in Australia ABN 96 004 458 404

This announcement is authorised for release to the market by Steve Allen, Rio Tinto’s Group Company Secretary.

riotinto.com

Notice to ASX/LSE        Page 2 of #NUM_PAGES#