Styrax grandifolius, the bigleaf snowbell or bigleaf storax, is a plant species native to the southeastern United States, ranging from Virginia south to Florida and west to Texas and Missouri. The plant grows as a deciduous shrub or tree up to 6 metres (20 ft) high, and is most commonly found in upland forests of the southeast's piedmont. As the specific epithet suggests, the species has larger leaves than sympatric Styracaceae, with alternate, obovate leaves up to 14 cm long and 10 cm wide that are densely pubescent underneath. Flowers are borne during early summer in racemes containing up to 20 flowers.

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