A zoom lens comprising in order from an object side to an image side: a first lens unit having a positive refractive power and configured not to move for zooming; a second lens unit having a negative refractive power and configured to move for zooming; a third lens unit having a positive refractive power and configured to move for zooming; a fourth lens unit having a negative refractive power and configured to move for zooming; an aperture stop; and a fifth lens unit having a positive refractive power and configured not to move for zooming, wherein the zoom lens includes no lens unit in addition to the first lens unit, the second lens unit, the third lens unit, the fourth lens unit and the fifth lens unit; the first lens unit comprises, in order from the object side to the image side, a first sub lens unit having a negative refractive power and configured not to move for focusing, a second sub lens unit having a positive refractive power and configured to move for focusing, and a third sub lens unit having a positive refractive power and configured not to move for focusing; the third sub lens unit comprises a negative lens; and conditional expressions 1.6 < L 2 ⁢ tm / L 2 ⁢ t < 1000.0; L 2 ⁢ w / L 3 ⁢ w < 1.0; and − 0.5 < f 2 / f 3 ≤ − 0.21 are satisfied, where L2t represents an interval between the second lens unit and the third lens unit at a telephoto end, L2tm represents an interval between the second lens unit and the third lens unit at a zoom state (tm) in which an interval between the third lens unit and the fourth lens unit is minimum, L2w represents an interval between the second lens unit and the third lens unit at a wide-angle end, L3w represents an interval between the third lens unit and the fourth lens unit at the wide-angle end, f2 represents a focal length of the second lens unit, and f3 represents a focal length of the third lens unit. a first lens unit having a positive refractive power and configured not to move for zooming; a second lens unit having a negative refractive power and configured to move for zooming; a third lens unit having a positive refractive power and configured to move for zooming; a fourth lens unit having a negative refractive power and configured to move for zooming; an aperture stop; and a fifth lens unit having a positive refractive power and configured not to move for zooming, wherein the zoom lens includes no lens unit in addition to the first lens unit, the second lens unit, the third lens unit, the fourth lens unit and the fifth lens unit; the first lens unit comprises, in order from the object side to the image side, a first sub lens unit having a negative refractive power and configured not to move for focusing, a second sub lens unit having a positive refractive power and configured to move for focusing, and a third sub lens unit having a positive refractive power and configured not to move for focusing; the third sub lens unit comprises a negative lens; and conditional expressions 1.6 < L 2 ⁢ tm / L 2 ⁢ t < 1000.0; L 2 ⁢ w / L 3 ⁢ w < 1.0; and − 0.5 < f 2 / f 3 ≤ − 0.21 are satisfied, where L2t represents an interval between the second lens unit and the third lens unit at a telephoto end, L2tm represents an interval between the second lens unit and the third lens unit at a zoom state (tm) in which an interval between the third lens unit and the fourth lens unit is minimum, L2w represents an interval between the second lens unit and the third lens unit at a wide-angle end, L3w represents an interval between the third lens unit and the fourth lens unit at the wide-angle end, f2 represents a focal length of the second lens unit, and f3 represents a focal length of the third lens unit.