来头县（越南语：Lai Vung）越南的一个县。位于越南南圻地区同塔省，下辖1镇11公社，县城位于来头市镇。本县最著名的景点是宝兴寺（越南语：Chùa Bửu Hưng），它在2007年8月3日被列入越南国家遗迹。新城社（越南语：Tân Thành）后江工业园区是同塔省除沙沥工业园以外，较早开发的工业园之一，目前尚在建设。本县尚没有通往后江对岸的桥梁，较重要的渡口有新城渡口等。

Lai Vung is a district (huyện) of Đồng Tháp Province in the Mekong Delta region of Vietnam.

As of 2003 the district had a population of 160,125. The district covers an area of 220 km². The district capital lies at Lai Vung. This district is famous for its Mandarin orange which usually ripens in Tết holiday season and for the master craftman of boat in Long Hau commune. Other specialities are nem- a kind of fermented pork and Phong Hoa pomelo.