| Official Name: | Ntuusi |
| Pushpin Map: | Uganda |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Uganda |
| Subdivision Type: | Country |
| Subdivision Name: | Uganda |
| Subdivision Type1: | District |
| Subdivision Name1: | Sembabule District |
| Subdivision Type2: | County |
| Subdivision Name2: | Lwemiyaga County |
| Unit Pref: | Imperial |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Coordinates: | 0.05°N 31.2011°W |
Ntuusi is a settlement in the Central Region of Uganda.
The settlement is in Lwemiyaga County in Sembabule District in south-western Uganda, approximately 18km (11miles) south-east of Lwemiyaga, where the county headquarters are located.[1] This is approximately 33km (21miles) north-west of Sembabule, the site of the district headquarters.[2] Ntuusi is about 86km (53miles) by road, north-west of Masaka, the nearest large city.[3] The coordinates of Ntuusi are 00°03'00.0"N, 31°12'04.0"E (Latitude:0.050000; Longitude:31.201111).
Ntuusi is the location of the headquarters of Ntuusi sub-county in Lwemiyaga County, Sembabule District.[4] The modern-day settlement of Ntuusi is inside the Ntuusi Archelogical Site, an area measuring approximately 100ha, that was continuously settled by humans during the period 1,000AD and 1,500AD. This area, also known as Bigo bya Mugenyi, is the earliest evidence of organised human settlement in the African Great Lakes Region.[5]