There is provided an insulated wire including a wire conductor and an insulation coating formed on the wire conductor by extrusion coating a resin composition. The resin composition is a mixture of a polyphenylene sulfide-based resin (A) and a polyamide-based resin (B), in which a ratio of parts by mass of the resin (B) to that of the resin (A), i.e. (B)/(A), is not less than 5/95 and not more than 30/70.