The Flora of Papua New Guinea, in the WGSRPD, is the flora of the eastern portion of island of New Guinea, i.e. that part of the island that is within the nation state Papua Niugini (Papua New Guinea).

The flora of the nation state of Papua Niugini is divided between this category, the Flora of the Bismarck Archipelago, and the northern (Bougainville Island, etc.) parts of the Flora of the Solomon Islands (archipelago).

For plants only found in Western New Guinea in Indonesia, the island's western portion, see Category:Flora of Western New Guinea.

For plants of the entire island of New Guinea, see Category:Flora of New Guinea.

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