Patiriella regularis, the New Zealand common cushion star, is a sea star of the family Asterinidae, native to New Zealand. It has an arm spread of up to 60 mm (2.4 in).

It is one of New Zealand's most common rocky shore starfish. It is abundant in shallow water around both mainland islands. They come in a large range of colours and have 4–6 arms.

They feed on algae, barnacles and invertebrates. To capture their food the cushion star inflates its cushion and then deflates on top of its prey.

They were introduced into waters in south east Tasmania, where they have become well established. Concern exists that they may be an invasive species. They breed in January to March. Once fertilised, 9–10 weeks are needed for them to grow from larvae.

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