A fixing device includes: first and second rotatable members configured to heat-fix, at a nip therebetween, a toner image formed on a sheet by using a toner containing a parting agent; a heating portion, provided opposed to an outer surface of the first rotatable member, configured to heat the first rotatable member through electromagnetic induction heating; a holding portion configured to hold the heating portion; and a suppressing portion configured to suppress air flow in a space between the first rotatable member and the holding portion. The suppressing portion extends from the holding portion toward the first rotatable member and is provided so that a free end portion thereof is in a position of 0.5 mm or more and 3.5 mm or less from the outer surface of the first rotatable member.