- Ari Creek, a stream in Western Province
- Aria Creek, a stream in West New Britain Province
- Aria River, a stream in Enga Province
- Arid Creek, a stream in Gulf Province
- Arielo Bay, a cove in West New Britain Province
- Ariga River, a stream in Sandaun Province
- Ario Creek, a stream in Gulf Province
- Arivai Creek, a stream in Sandaun Province
- Arkim River, a stream in Southern Highlands Province
- Del River, a stream in Western Province
- Demowi Creek, a stream in Western Province
- Denge Shoal, a shoal in New Ireland Province
- Dentina Creek, a stream in New Ireland Province
- Depot Creek, a stream in Gulf Province
- Derimos Creek, a stream in New Ireland Province
- Devils Race, a rapids in Western Province
- Dhu River, a stream in Madang Province
- Diap River, a stream in Sandaun Province
- Dibibi River, a stream in Southern Highlands Province
- Dibiri River, a distributary in Western Province
- Dibou River, a stream in Northern Province
- Didim River, a stream
- Iawo River, a stream in Sandaun Province
- Iba Bay, an inlet in Northern Province
- Ibai Creek, a stream in Gulf Province
- Ibal Creek, a stream in Chimbu Province
- Ibbekuang Bay, a cove in Sandaun Province
- Ibinambo River, a stream in Northern Province
- Ibleli Creek, a stream in Sandaun Province
- Ibleu Creek, a stream in Sandaun Province
- Iboki Anchorage, an anchorage in West New Britain Province
- Idafur Creek, a stream in Sandaun Province
- Idam River, a stream in Sandaun Province
- Kon River, a stream in Western Highlands Province
- Konos River, a stream in New Ireland Province
- Kopako Creek, a stream in Southern Highlands Province
- Kopuvani Creek, a stream in Central Province
- Kopwei River, a stream in Northern Province
- Korala Creek, a stream in Northern Province
- Koreli Creek, a stream in Sandaun Province
- Lake Kopiago, a lake in Southern Highlands Province
- Mauwal Creek, a stream in Sandaun Province
- Mavavia River, a stream in Bougainville
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- Mave River, a stream in Madang Province
- Mavelo River, a stream in West New Britain Province
- Mavin River, a stream in East New Britain Province
- Mawge Creek, a stream in Western Province
- May River, a stream in East Sepik Province
- Mbwei River, a stream in Gulf Province
- McGee Shoal, a shoal in Sandaun Province
- Mea Creek, a stream in Gulf Province
- Mea River, a stream in Madang Province
- Ok Arik, a stream in Western Province
- Ok Arip, a stream in Western Province
- Ok Deven, a stream in Western Province
- Palamang River, a stream in West New Britain Province
- Palangumar Bay, a bay in East New Britain Province
- Pali River, a stream
- Palmen Harbour, a harbor in New Ireland Province
- Palmer Junction, a confluence in Western Province
- Palmer River, a stream in Western Province
- Palos Bay, a cove in New Ireland Province
- Palpa River, a stream in Madang Province
- Panabde Creek, a stream in Gulf Province
- So'obe Creek, a stream in Gulf Province
- So'oge Creek, a stream in Gulf Province
- Sopa River, a stream in Madang Province
- Soraken Harbour, a harbor in Bougainville
- Uroron River, a stream in Bougainville
- Wai Tu River, a stream in Western Province
- Waitavalo River, a stream in East New Britain Province
- Wajama Inlet, an inlet in Northern Province
- Wakema River, a stream in Enga Province
- Wakioka River, a stream in Northern Province
- Wala River, a stream in East New Britain Province
- Walag River, a stream in Madang Province
- Walamu Creek, a stream in Sandaun Province
- Wali Bay, a bay in Manus Province
- Wali Creek, a stream in West New Britain Province
- Walindi River, a stream in West New Britain Province
- Walkesi Creek, a stream in West New Britain Province
- Walmbam Creek, a stream in East Sepik Province
- Walmegol Creek, a stream in Sandaun Province
- Wok Arip, a stream in Western Province
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