Nestegis sandwicensis, commonly known as Hawai'i olive[2] or olopua, is a species of flowering tree in the olive family, Oleaceae, that is endemic to Hawaii.

[3] It is found on all major islands at elevations of 30–1,300 m (98–4,265 ft) in coastal mesic and mixed mesic forests,[4] and, especially, dry forests.

[5] Native Hawaiians used the hard wood of olopua to make ʻau koʻi (adze handles), apuapu (rasps for making fish hooks), ʻōʻō (digging sticks), lāʻau melomelo (fishing lures), pou (house posts), pāhoa (daggers), pīkoi (tripping weapons similar to a rope dart), and spears.

Because the wood burned well even if green, it was used as wahie (firewood).

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