Dianella sandwicensis is a species of flax lily native to Hawaii and New Caledonia.

[1] In Hawaiian it is called ʻukiʻuki.

Neal (1965) reports that historically, Hawaiians used the berries to make blue dye for kapa.

They also used the leaves for thatching house walls.

[2] When sterile, Dianella sandwicensis is similar in appearance to Machaerina angustifolia.