In a golf ball (1) according to the present invention, dimples (2) formed on the surface thereof have the same diameter and are classified into first group dimples (2-I) and second group dimples (2-II) depending on the depth thereof. The depth of the first group dimple (2-I) is from 130% to 280% of that of the second group dimple (2-II). Further, the number of the first group dimples (2-I) is from 20% to 80% of the total number of the dimples. <IMAGE>
