Huailai (simplified Chinese: 怀来县; traditional Chinese: 懷來縣; pinyin: Huáilái Xiàn) is a county in northwestern Hebei province, People's Republic of China, under the administration of the prefecture-level city of Zhangjiakou.
Huailai County is a center for grape wine production, with the China Great Wall Wine Company, Ltd. headquartered in the town of Shacheng. Huailai Tianyuan Special Type Glass Co., Ltd. is also located in Huailai County.