Ngamiani Kusini is an administrative ward in Tanga City Council of Tanga Region in Tanzania. Ngamiani Kati forms the northern boundary of the ward. Usagara and Makorora border the ward to the east. Msambweni is in the south. Majengo and Mwanzange are located to the west. The ward covers an area of 0.4 km2 (0.15 sq mi), and has an average elevation of 15 m (49 ft). According to the 2012 census, the ward has a total population of 7,638.