A fixing device includes a fixing unit configured to heat a sheet to fix an image on the sheet, a heating unit configured to heat the fixing unit, and a heat conduction unit disposed adjacent to a heated surface of the fixing unit. The fixing unit includes a first region not in contact with the sheet during heating of the sheet and a second region that is in contact with the heated sheet during heating of the sheet and has a temperature lower than the first region as a result of the contact with the sheet during the heating. The heat conduction unit is configured to transfer heat from the first region to the second region.