Isonandra lanceolata is a species of plant in the family Sapotaceae. The specific epithet lanceolata means 'spear-shaped', referring to the leaves.
Isonandra lanceolata grows as a shrub or small tree or as a larger tree up to tall with a trunk diameter of up to . The bark is chocolate brown. Inflorescences bear up to 10 pale yellow flowers.
Isonandra lanceolata is native to Tamil Nadu (India), Sri Lanka and Borneo. It grows in forests up to altitude.