Provided are an aqueous pigment dispersion that includes an azo pigment represented by Formula (1) as described in the specification, and/or a tautomer thereof, the azo pigment showing characteristic X-ray diffraction peaks at least at Bragg's angles (20.2) of 4.8, 7.2, 9.7, 20.0, 17.3, 26.0, and 26.7 in CuK characteristic X-ray diffraction; a first dispersant; a second dispersant; and water, the aqueous pigment dispersion being obtained via the following Step b.

Step b: a step of dispersing an azo pigment represented by Formula (1) and/or a tautomer thereof, a first dispersant, and a second dispersant in water and thereby obtaining an aqueous pigment dispersion.