Prince Charles and the Duchess of Cornwall will visit the National Memorial Arboretum to join families for victims of overseas terrorism.
They will be joined by nearly 300 other family members of those who have died in terrorist attacks abroad for a special ceremony to dedicate the memorial.
The National Memorial to Victims of Overseas Terrorism - called Still Water - is dedicated to all British victims of overseas terrorism and will stand to honour any future victims.
The memorial was designed by Alison Wilding and Adam Kershaw and will be unveiled at the ceremony which will be lead by the Archbishop of Canterbury, Justin Welby.
Minister for Defence People and Veterans, Tobias Ellwood, whose brother was killed in the 2002 Bali bombing, will also attend alongside Boris Johnson and Sajid Javid.
Mr Ellwood said: "Today is a day when we remember the lives of those who were tragically taken in terrorist attacks abroad.
"I know from personal experience that in times of pain we must come together to support and help one another.
"This memorial stands as a symbol of our unity against violence and hatred and will be a peaceful space for families to remember their loved ones."
It is hoped that the memorial will become a place of reflection, remembrance and contemplation for anyone who has been affected by terrorism.
In September 2017 it was announced that Still Water had been selected by an independent panel to be the memorial. The work was completed in December 2017 and it is now open to the public.
One of those who will be remembered at the memorial is Burton student, 20-year-old Hannah Bladon, who died after being stabbed in Jerusalem.
The former Abbot Beyne pupil was taking part in a student exchange programme at the Rothberg International School at the Hebrew University of Jerusalem when she was allegedly stabbed.
Her parents, Max and Stella Bladon will be at the ceremony at the Arboretum.
A man has been charged with the first degree murder of Hannah and is due to stand trial in Jerusalem later this year.