迪亚尼海滩是东非国家肯雅的海滩度假村，位于该国东部印度洋沿岸，处于蒙巴萨以南35公里，海滩全长约25公里，离岸的珊湖礁是游客的潜水胜地。

Diani Beach is a major beach resort on the Indian Ocean coast of Kenya (in eastern Africa). It is located 30 kilometres (19 mi) south of Mombasa, in the nearby Kwale County.

The beach is about 10 kilometres (6 mi) long, from the Kongo river to the north and Galu beach to the south (the southern point of reference is an old Baobab tree). It is adjacent to the town of Ukunda, the population of which nears 100,000 inhabitants. A small airstrip is located between the beach area and the Mombasa-Lunga Lunga road. The water remains shallow near shore, with some underwater sandbars near the surface which allow wading with a clear view of the sandy bottom. Inland from the beach, there is extensive vegetation (see photo at right), including numerous palm trees which cover the coastal areas, unlike the dry acacia trees of the mountainous Kenyan Highlands. The Mwachema River flows into the sea at Diani Beach.