This oriented electromagnetic steel sheet is provided with a base material steel sheet, an oxide film formed on the base material steel sheet and formed from amorphous SiO2, and a tension insulating film formed on the oxide film. As chemical components, the base material steel sheet contains, by mass percent, less than or equal to 0.085% C, 0.80-7.00% Si, less than or equal to 1.00% Mn, less thanor equal to 0.065% acid soluble Al, and less than or equal to 0.050% of the Seq represented by S+0.406*Se, the remainder consisting of Fe and unavoidable impurities. Regarding the FWHMs, i.e., the half-value widths of the peaks of cristobalite-type aluminum phosphate obtained by X-ray diffraction, (i) the half-value width (FWHM-Co) of the peak appearing at 2theta = 24.8 degrees when using a Co-Kalpha excitation source is less than or equal to 2.5 degrees, or, (ii) the half-value width (FWHM-Cu) of the peak appearing at 2theta = 21.3 degrees when using a Cu-Kalpha excitation source is less thanor equal to 2.1 degrees.