Mandalawangi is a village and an administrative district (kecamatan) situated in the northeast corner of Pandeglang Regency in the Banten Province on the island of Java, Indonesia. The administrative center for the district is located in Cikoneng village.
The area covers a total land size of 80.19 km2. According to census data, the population grew from 46,805 in 2010 to 55,287 in 2020, with an official estimate reaching 57,028 as of mid-2023.