| Pyeonghae | |
| Native Name Lang: | ko |
| Settlement Type: | Town |
| Translit Lang1: | Korean |
| Translit Lang1 Type: | Chosŏn'gŭl |
| Translit Lang1 Type1: | Hancha |
| Translit Lang1 Info2: | P'yŏnghae-ŭp |
| Translit Lang1 Info3: | Pyeonghae-eup |
| Coordinates: | 36.7256°N 129.4416°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | North Gyeongsang |
| Subdivision Type2: | County |
| Subdivision Name2: | Uljin |
| Established Title1: | Incorporation |
| Established Date1: | 1 December 1980 |
| Area Total Km2: | 37.16 |
| Population Total: | 3,798 |
Pyeonghae is a South Korean town. It is administered as part of Uljin County in North Gyeongsang Province.
Pyeonghae's name means "Peaceful Sea(s)". It appears in 19th-century sources as "Pingai", "Pingai Harbor", and "Ping-hai Harbor".[1]
Pyeonghae lies on the north bank of the Namdae (Chinese: {{linktext|南|大|川, "Southern Great River"), about a mile inland from its confluence with the Sea of Japan on the eastern shore of the Korean Peninsula. Its harbor was formed by a conical island, which sheltered an anchorage in the Namdae estuary.[1]
During the 19th century, Pyeonghae was reckoned one of the primary harbors on Korea's eastern shore.
Pyeonghae Village (Pyeonghae-ri) was officially promoted to town status on 1 December 1980.