FHX or FHx can refer to:
Family history (medicine), or the disorders carried by blood relatives of a patient West Fenghua Road station, a train station in Xihu district, Hangzhou, Zhejiang province, China FHX, a military squadron in the No. 7 Elementary Flying Training School RAF unit in the United Kingdom, by squadron code; see List of RAF squadron codes Fenghuang County, a county in Xiangxi Tujia and Miao Autonomous Prefecture, Hunan province, China; see List of administrative divisions of Hunan