North Sangatta is the capital of East Kutai Regency which is also the center of government and economy, one of which is the preservation of mangrove forests which are currently spread across various areas of North Sangatta, which aims to prevent large waves from occurring which could harm residents around the coast.Normalized Difference Vegetation Index (NDVI) is a calculation on an image that is used to determine the level of greenness as a starting point for dividing vegetation areas. By using the NDVI method which is obtained by calculating near infrared with red reflected by plants, information is obtained about the density of mangrove vegetation. The research results show that the total area of mangroves in the coastal area of North Sangatta District is 32,425.43 ha. Of the total area, some mangroves have a very poor health condition category of around 8,446.82 ha.The aim of this research is to determine the health status of mangrove forests using sentinel-2A imagery. By adding scientific references related to the use of Sentinel- 2A Imagery data, a reference can be obtained in determining management policies for mangrove forest areas on the coast of North Sangatta District. Keywords:- North Sangatta, Mangrove, Sentinel-2A, NDVI.