A zoom lens comprising: a first lens group provided with a diffraction optical element and having positive refractive power, a second lens group having negative refractive power, a third lens group having negative refractive power, and a fourth lens group having positive refractive power, which are sequentially arranged, from an object side to an image side, wherein the first lens group and the fourth lens group are fixed instead of moving with respect to the image surface at the time of zooming, wherein the second lens group and the third lens group are configured to be moved at the time of zooming between a wide angle end and a telephoto end such that the second lens group is positioned to the object-most side at the wide angle end, and the third lens group is positioned to the image-most side at the telephoto end, wherein at least one of the second lens group and the third lens group includes a negative lens satisfying the following conditional expressions: 1.50 < nd < 1.75; and 60.0 < v d < 75.0; characterised in that: the negative lens satisfies the following conditional expression: θ C, A ′ − 0.0015 × v d < 0.2550, in which nd denotes the refractive index of a material composing the negative lens, vd denotes the Abbe number of the material composing the negative lens, and θ C,A denotes the partial dispersion ratio of the material composing the negative lens, and the partial dispersion ratio θ C,A' is represented as θ C,A' = (n C -n A')/(n F -n C) with the refractive indices of the material composing the negative lens for an F line, a C line, and an A' line being denoted by n F, n C, and n A'; wherein the focal length f T of the entire system at the telephoto end satisfies the following conditional expression: 0.01 < f T / f DOE < 0.05, in which f DOE denotes the focal length of a diffraction part of the diffraction optical element; wherein the first lens group includes one or more positive lenses, and an average value ν IGP of Abbe numbers of materials of the positive lenses included in the first lens group satisfies the conditional expression: 80 < v IGP < 96. a first lens group provided with a diffraction optical element and having positive refractive power, a second lens group having negative refractive power, a third lens group having negative refractive power, and a fourth lens group having positive refractive power, which are sequentially arranged, from an object side to an image side, wherein the first lens group and the fourth lens group are fixed instead of moving with respect to the image surface at the time of zooming, wherein the second lens group and the third lens group are configured to be moved at the time of zooming between a wide angle end and a telephoto end such that the second lens group is positioned to the object-most side at the wide angle end, and the third lens group is positioned to the image-most side at the telephoto end, wherein at least one of the second lens group and the third lens group includes a negative lens satisfying the following conditional expressions: 1.50 < nd < 1.75; and 60.0 < v d < 75.0; characterised in that: the negative lens satisfies the following conditional expression: θ C, A ′ − 0.0015 × v d < 0.2550, in which nd denotes the refractive index of a material composing the negative lens, vd denotes the Abbe number of the material composing the negative lens, and θ C,A denotes the partial dispersion ratio of the material composing the negative lens, and the partial dispersion ratio θ C,A' is represented as θ C,A' = (n C -n A')/(n F -n C) with the refractive indices of the material composing the negative lens for an F line, a C line, and an A' line being denoted by n F, n C, and n A'; wherein the focal length f T of the entire system at the telephoto end satisfies the following conditional expression: 0.01 < f T / f DOE < 0.05, in which f DOE denotes the focal length of a diffraction part of the diffraction optical element; wherein the first lens group includes one or more positive lenses, and an average value ν IGP of Abbe numbers of materials of the positive lenses included in the first lens group satisfies the conditional expression: 80 < v IGP < 96.