- Language: Ninggerum
- Alternate names: Kasiwa, Kativa, Muyu, Ningerum, Ninggeroem, Ninggirum, Ninggrum, Niyium, Obgwo, Orgwo, Tedi, Tidi
- Language code: nxr
- Language family: Trans-New Guinea, Ok-Awyu, Ok, Lowland (SIL classification)
- Number of speakers: >3,500
- Vulnerability: Threatened
- Script: Latin script.
About half the population died 1950–1975 from western diseases. Traditional religion, Christian.
Ninggerum is spoken in Indonesia, Papua New Guinea, Southeast Asia;Pacific.