Glass substrate, electronic device, and method for manufacturing glass substrate

The invention relates to a glass substrate, an electronic device, and a method for manufacturing the glass substrate. The purpose of the present invention is to provide a glass substrate in which minute irregularities on the surface of the glass substrate, which cause color unevenness, are reduced. This glass substrate has a first main surface and a second main surface, and is characterized in that: the total value (A3-10) of the undulation intensity in the wavelength range of 3-10 mm calculated by subjecting the undulation waveform of the surface of the first main surface to a discrete Fourier transform is 0.50 * 10-3 [mu] m or more and 1.60 * 10-3 [mu] m or less; and the undulation intensity A20 at a wavelength of 20 mm calculated by subjecting the undulation waveform of the surface of the first main surface to a discrete Fourier transform is 0.50 * 10 [mu] m or more and 1.60 * 10 [mu] m or less. According to the glass substrate of the present invention, it is possible to provide a glass substra