Dataset of sperm head images with expert-classification labels. The dataset contains 1854 sperm head images obtained from six semen smears and classified by three Chilean referent domain experts according to World Health Organization (WHO) criteria, in one of the following classes: normal, tapered, pyriform, small and amorphous. This gold-standard is aimed for use in evaluating and comparing not only known techniques, but also future improvements to present approaches for classification of human sperm heads for semen analysis.