Abstract: [Problem] To provide an anti corrosion coating composition which has excellent adhesion to a base material and an excellent anti corrosion property and which can be formed into a coating film that rarely undergoes the remaining of bubbles on the surface thereof even when the anti corrosion coating composition is coated using a brush or a roller. [Solution] An anti corrosion coating composition comprising (a) an epoxy resin (b) a curing agent and (c) a poly(a olefin) that contains a structural unit derived from an a olefin having 6 or more carbon atoms.