The objective of the present investigation was to determine the age at puberty in Colombian Creole sheep (Ovis aries) of hair and its relationship with body measurements, testicular and seminal quality in the Department of Cordoba, Colombia. Fourthy sheeps with ages between 4 and 12 months were evaluated through the andrological examination. These animals were fed with tropical pastures such as Bothriochloa pertusa and Dichantium aristatum, in a traditional extensive management. In addition, body and testicular morphometric measurements were determined, together with the evaluation of sperm quality. Morphometric measurements studied were: live weight, height at the croup (HG), height at withers (HW), amplitude ischia, croup length (CL), rump width (RW), thoracic perimeter (TP), longitudinal diameter (LD). Testicular measures were: scrotal circumference, length testicles and width of the testicles. The macroscopic and microscopic characteristics of seminal quality evaluated were: volume, color, odor, density, pH, progressive motility, mass motility, vitality, morphology and sperm concentration. For the analysis of the variables, descriptive statistics, analysis of variance and Pears on correlation coefficient were used. The criterion to define puberty was the presentation of minimum individual motility of 10% and sperm concentration greater than 50 x 106 sperm/mL of semen (spz/mL). The age at puberty male sheep hair creole was obtained at 5.4 ± 0.5 mon with a LW of 18.6 ± 2.7 kg. Positive correlations were found between LD with TP and CL; In addition, CL with HG and HW. This suggests that LG, DL and sperm quality assessment can be used as a criterion for reliable selection based on the productive parameters.