A metal grid includes: a member which includes a curved principal surface； an anodic oxide film which is formed on the principal surface of the member； and a lattice structure which has an uneven shape periodically formed on the anodic oxide film. A production method for a metal grid includes: a step of forming a valve metal film on a principal surface of a member； a step of forming an anodic oxide film by performing an anodic oxidation treatment on the valve metal film while the principal surface is curved； and a step of forming a lattice structure with a periodic uneven shape on the anodic oxide film by forming an etching mask with a periodic opening on a surface of the anodic oxide film and etching the anodic oxide film through the opening.
