A wavelength conversion member manufacturing method includes: providing the wavelength conversion member having an upper surface, the wavelength conversion member including a phosphor portion, and a light-transmissive portion configured to transmit fluorescence from the phosphor portion; and forming, in the wavelength conversion member, at least one depressed portion each having an inclined surface inclined with respect to the upper surface by irradiating the wavelength conversion member with a pulsed laser beam from above more than once to form a plurality of continuous machining marks at different processing depths.