Entoloma hochstetteri, also known as the blue pinkgill, sky-blue mushroom or similar names, is a species of mushroom that is native to New Zealand. The small mushroom is a distinctive all-blue colour, while the gills have a slight reddish tint from the spores. The blue colouring of the fruit body is due to azulene pigments. Whether Entoloma hochstetteri is poisonous or not is unknown.

This species was one of six native fungi featured in a set of fungal stamps issued in New Zealand in 2002. It is also featured on the New Zealand fifty-dollar note. With E. hochstetteri's inclusion, this makes it the only banknote in the world which features a mushroom on it. In a 2018 poll, E. hochstetteri was ranked first by Manaaki Whenua – Landcare Research for its pick as New Zealand's national fungus.

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