HFD may refer to: Transportation. Hafizabad railway station, Punjab, Pakistan, station code. Hartford-Brainard Airport, Connecticut, US, IATA code. Hereford railway station, England, station code. Hoofddorp railway station, Netherlands, station code. Union Station (Hartford), Connecticut, US, Amtrak code. Fire departments. Henderson Fire Department, Nevada, US. Honolulu Fire Department, Hawaii, US. Houston Fire Department, Texas, US. Hoboken Fire Department, New Jersey, US. Other uses. DHS Human Factors and Behavioral Sciences Division. Half-factorial domain, an atomic domain.
https://en.wikipedia.org/wiki/HFD