Wikstroemia oahuensis, the ʻĀkia or Oʻahu false ohelo, is a species of flowering shrub in the mezereon family, Thymelaeaceae, that is endemic to Hawaiʻi.

This species is highly variable, with the leaves ranging from large and long to small and round.

The tubular yellow to yellow-green flowers may be perfect (bisexual) or unisexual (either male or female), and less than 0.5 inches (1.3 cm) long.

Wikstroemia oahuensis is a relatively common plant in a wide variety of habitats on the islands of Kauaʻi, Oʻahu, Molokaʻi, Lānaʻi, and Maui.

[3] The bacteria species Flavobacterium akiainvivens was originally isolated from rotting ʻākia wood, and the shrub lends it its name.