The Sinseong-ri Reed Field (Korean: 신성리 갈대밭) is a reed bed located at the mouth of the Geum River where the cities Seocheon and Gunsan meet in South Korea.

It is the seventh typical reed habitat selected by the Korea Tourism Organization.

To preserve the reed beds, only about 3% of the total area offers walking trails and is accessible for public use.

Nearby are tourist attractions such as the Geumgang River estuary resort and the Hansan Mosi (Ramie Fabric) Exhibition Hall.

Reed Field is one of the Eight Scenic Spots of Seocheon (서천팔경; 舒川八景) along with Maryang-ri Camellia Forest (마량리 동백나무 숲), Geumgang Estuary Bird Sanctuary (금강 하굿둑 철새도래지), Hansan Mosi (Ramie Fabric) Village (한산 모시 마을), Chunjangdae Beach (춘장대 해수욕장), Munheonseowon Confucian School (문헌서원), Huirisan Recreational Forest (희리산 자연휴양림), Cheonbangsan Mountain (천방산).