|Country||Papua New Guinea|
|Province||New Ireland Province|
|• Total||6,574 km2 (2,538 sq mi)|
|Population (2011 census)|
|• Density||17/km2 (44/sq mi)|
|Time zone||AEST (UTC+10)|
Namatanai District is the southernmost and larger of the two districts of New Ireland Province in Papua New Guinea. The district covers the southern part of the island of New Ireland, as well as the Tabar Group, the Lihir Group, the Tangga Group and the Feni Islands.