Zantedeschia aethiopica (Lily of the Nile or Calla lily; syn. Calla aethiopica L., Richardia africana Kunth, Richardia aethiopica (L.) Spreng., Colocasia aethiopica (L.) Spreng. ex Link) is a species in the family Araceae, native to southern Africa in Lesotho, South Africa, and Swaziland.

It is a herbaceous perennial plant, evergreen where rainfall and temperatures are adequate, deciduous where there is a dry season. It grows to 1–2.5 m tall, with large clumps of broad, arrow shaped dark green leaves up to 45 cm long. The flowers are large, produced in spring, summer and autumn, with a pure white spathe up to 25 cm and a yellow spadix up to 9 cm long.

A number of cultivars have been selected for use as ornamental plants. 'Crowborough' is a more cold tolerant cultivar growing to 90 cm tall, suited to cool climates such as the British Isles and north-western United States. 'Green Goddess' has green stripes on the spathes. 'White Sail', growing to 90 cm tall, has a very broad spathe.

It is also commonly known as the Arum lily, although the plant is neither a true Arum (genus Arum) nor a lily (genus Lilium), but so named as the flowers resemble those of the arums.