On the previous day Prince Charles and his son are expected to attend a UK-led service at Helles on the Gallipoli peninsula and also a separate international service.
British media last week reported that Prince Harry will spend several weeks based in Australia in the next few months before travelling to Turkey with his father.
Harry will reportedly be seconded to work with the Australian defence forces during his time Down Under before quitting the British military altogether later this year.
Buckingham Palace on Friday said the Queen, Prince Philip and Prince William will attend a wreath-laying ceremony at the cenotaph in London on Anzac Day.
They'll also be present at a service of commemoration and thanksgiving at Westminster Abbey.
The Duke of Edinburgh will separately attend a wreath-laying service at St Paul's Cathedral.
Gallipoli services director Tim Evans said in April 2014 the royal family would like to send "a very senior member of the royal family ... so you can draw your own conclusions".
"Prince Charles would be a very welcome nominee," he said, noting that the future king attended the 90th anniversary in 2005."
- AAP
