Sperm cryopreservation is a method for preserving male fertility that involves freezing and storing sperm for future use in assisted reproductive technology programs. The procedure is indicated for men prior to vasectomy, cancer treatment, or work in hazardous conditions, as well as a backup option if fresh samples are not available on the day of follicle retrieval. After thawing, the sperm retains its fertilizing capacity and can be used for intrauterine insemination (IUI), in vitro fertilization (IVF), or intracytoplasmic sperm injection (ICSI). This is a reliable way to become a biological father in the future, regardless of the situation.