The New Zealander was killed after a tourist bus overturned in Qacha's Nek, Lesotho, the Ministry of Foreign Affairs and Trade said.
Two other New Zealanders were injured in the crash on September 21, a Ministry spokesman said.
The New Zealand High Commission in Pretoria, South Africa, was providing consular assistance to the New Zealanders involved and their families.
Lesotho is a small landlocked country within the borders of South Africa.