Isonandra borneensis is a tree in the family Sapotaceae.

Isonandra borneensis grows as a tree up to 40 metres (130 ft) tall, with a trunk diameter of up to 70 cm (30 in).

Inflorescences bear up to three white flowers.

[3] Isonandra borneensis is endemic to Borneo.

Its habitat is forests from sea-level to 1,000 m (3,000 ft) elevation.