The present technology is an epoxy resin composition containing an epoxy resin (A), a urethane resin (B) in which the terminal isocyanate of the urethane prepolymer is blocked by at least one of an ε-polycaprolactam, an oxime, or a pyrazole, and in which bisphenol A is included in the backbone of the aforementioned urethane prepolymer, and a curing agent (C).