The Duke and Duchess of Sussex will meet youngsters from across the Commonwealth during an event at London's Marlborough House.
Hosted by Commonwealth Secretary-General Patricia Scotland, both Harry and Meghan are set to attend the Your Commonwealth Youth Challenge reception on Thursday.
It marks the culmination of the Commonwealth Secretariat's youth leadership workshop, and will also see Harry address the event.
The workshop brings together the newly-elected Commonwealth Youth Council Executive and leaders of the Commonwealth youth networks.
It aims to encourage them to think about the future, and their role in shaping it.
The royal couple will meet those who have taken part to hear about their ideas, including individuals from Australia, New Zealand, Fiji and Tonga ahead of their tour to the region this autumn.