The five-star resort in Zanzibar will be the first to operate under a new The Mora moniker as The Mora Zanzibar.
Tui said the brand name derived from the Latin word for "pause" and would blend "laid-back, contemporary luxury" with "highly tailored and flexible service".
It added the brand was positioned to target a growing "high income" customer segment that more readily invests in experiences rather than goods.
The Mora Zanzibar will become the first Tui property in the destination acquired via is global hotel fund.