Zanonia is a monotypic genus in the flowering plant family Cucurbitaceae (the cucumber, squash, and pumpkin family).

Botanical illustration of Zanonia indica.

The only species is Zanonia indica, a medium-sized liana found in the Indian subcontinent and Southeast Asia east to New Guinea. It has a number of subspecies.

At one time a number of Alsomitra species were classified among the Zanonia.

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