Where in the world?
The flag of Niger features three equal horizontal bands of orange, white and green, with an orange circle centered in the white band.

Niger

Native Name: République du Niger
Population: 24,206,636
Region: Africa
Sub Region: Western Africa
Capital: Niamey
Top Level Domain: .ne
Currencies: West African CFA franc
Languages: French
Border Countries: DZABENBFATCDLBYMLINGA