A solid oxide fuel cell is provided with a fuel cell body and an inter-connector. The inter-connector has a base and also has protrusions protruding from the base toward the fuel cell body and electrically connected to the fuel cell body, and the inter-connector is formed integrally from a metallic material. The shape of each of the protrusions comprises: a pair of linear sections which are arranged parallel to each other and which respectively include straight lines; and a pair of curved sections which connect the pairs of adjacent ends of the pair of linear sections together.