A pattern film forming method includes a step of producing a transfer sheet in which a thin film is formed on a surface of a sheet-shaped material and a step of pressing the thin film against a pattern film formation surface of the substrate with a pressing member having convex portions corresponding to the pattern film from a reverse surface of the transfer sheet opposite to the thin film or a reverse surface of the substrate opposite to the pattern film formation surface to transfer the thin film to the substrate. A pattern film forming apparatus includes a sheet supply device, a pressing device and a substrate transport device. A high-definition pattern film having a desired pattern and a sharp edge can be formed with high productivity.