尼亚萨省（葡文：Província de Niassa）是莫桑比克11省之一，首府利欣加 (葡文:Lichinga).

莫桑比克省份 德尔加杜角省 · 加扎省 · 伊尼扬巴内省 · 马尼卡省 · 马普托市省 · 马普托省 · 楠普拉省 · 尼亚萨省 · 索法拉省 · 太特省 · 赞比西亚省

Niassa is a province of Mozambique. It has an area of 122,827 km and a population of 1,027,037 (2006). It is the most sparsely populated province in the country. Lichinga is the capital of the province. There are a minimum estimated 450,000 Yao people living in Mozambique. They largely occupy the eastern and northern part of the Niassa province and form about 40% of the population of Lichinga, the capital of this province.