The zoom lens has, in order from the object to image sides, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a positive refractive power, wherein the second lens unit and the fourth lens unit move during zooming. The following condition is satisfied:

where f2 represents a focal length of the second lens unit, ft represents a focal length of the entire system at a telephoto end zoom position, and 23 and N23 represent an Abbe number and a refractive index of the material forming the third lens of the second lens unit, respectively.