To provide an epoxy resin composition for fiber-reinforced composite materials, which little affects human bodies, can hold a low viscous liquid state at room temperature, and is excellent in pot life.

The epoxy resin composition for fiber-reinforced composite materials is characterized by comprising a glycidylamine type epoxy resin (A), a bisphenol F type epoxy resin (B), and an acid anhydride type curing agent (C), wherein the mass ratio of the glycidylamine type epoxy resin (A) and the bisphenol F type epoxy resin (B) is in a range of 90:10-30:70; and the content of the acid anhydride type curing agent (C) is such a value that the theoretical compounding rate of an acid anhydride contained in the acid anhydride type curing agent (C) to epoxy groups contained in the glycidylamine type epoxy resin (A) and the bisphenol F type epoxy resin (B) is ≥0.8 and ≤1.3 equivalents.