A thermoelectric conversion apparatus includes a substrate, and a power generation part formed on the substrate for generating a thermoelectric power. The power generation part includes a magnetic layer with magnetization and an electrode layer including a material exhibiting a spin-orbit interaction and formed on the magnetic layer. The substrate and the power generation part have flexibility, respectively. The thermoelectric conversion apparatus further includes a cover layer having flexibility and formed on the substrate so as to cover at least the power generation part. The magnetic layer includes magnetic layer pieces separated in a layer direction with a gap portion interposed between the magnetic layer pieces.