Mount Jerai, Mountain peak in Kedah, Malaysia

Mount Jerai is a 1,217-metre inselberg rising from flat rice paddies near the Strait of Malacca. Its summit has been developed into a hill resort, The Regency Jerai Hill Resort, reached by an 11 km paved road. From the top, visitors see Penang Island and the rice fields of Yan District.

Mount Jerai appears in the Aṣṭasāhasrikā Prajñāpāramitā, written by Sujātabhadra in 1015, as "Mount Balawati". Local tradition links the name to a princess, Seri Belawati, and the mountain was long called Kedah Peak. An information board at the summit states that it was once an island, Pulai Serai, before sea levels fell.

The name Jerai comes from Seri Belawati, a princess in local legend; the mountain was said to be a stone curse cast upon her, and "Seri" was gradually slurred into "Jerai". A 1015 manuscript by the scholar Sujātabhadra calls it "Balawati Mountain".

A paved road runs about 11 km from Gurun up to the radio station and The Regency Jerai Hill Resort at the summit. From the North-South Expressway, leave at the Gurun interchange, turn left after the toll and right at the traffic lights. Camping and picnic areas lie partway up; temperatures run about 19–24 °C and thick fog is common after rain and early morning.

The mountain shares the same rock layers as Langkawi Island, containing metamorphosed sandstone and shale formed long ago. This shared geology reveals that both places were once part of the same ancient formation.