Jeongbang Waterfall, Coastal waterfall in Seogwipo, South Korea.

Jeongbang Waterfall is a coastal waterfall on the southern shore of Jeju Island, South Korea, where water falls over granite cliffs straight into the sea. The drop is about 23 meters and the water lands directly in the ocean without passing through any river or beach.

The earliest written records of the waterfall come from an envoy sent by the Chinese emperor Qin Shi Huang to Jeju in search of herbs said to grant immortality. According to those accounts, he left an inscription on the rock to mark his visit.

The name Seobul Gwaji, meaning "Seobul was here", is tied to a legend that the Chinese envoy Seobul, sent by Emperor Qin Shi Huang to find herbs of eternal youth, left his mark on the cliff. The inscription itself no longer remains; a later carving reading "Seobulgwacha" refers to his journey. Local lore also holds that a holy dragon lived beneath the falls, and its spirit in the water was said to cure illness and bring rain in drought.

The entrance is within walking distance from central Seogwipo and reached by a short, well-marked path. Sturdy footwear is a good idea since the ground near the water can get slippery from the spray.

Jeongbang is one of the few coastal waterfalls in the world where a stream drops straight into the sea; the Korean Wikipedia names Jamaica's Dunn's River Falls as the other well-known example. The 1702 visit of Jeju magistrate Yi Hyeong-sang, who viewed the falls by boat, is recorded in the Tamna sullyeokdo under the title "Jeongbang tapseung".