Voluntary medical male circumcision (VMMC) was identified as an effective strategy in HIV prevention. Although circumcision reduces heterosexual acquisition of HIV by 60%, there is low uptake of VMMC services in Eswatini. This study applies the health belief model (HBM) in understanding perceptions of young men in Eswatini towards VMMC for HIV prevention to upscale its adoption. A qualitative design was followed. Uncircumcised males aged 20-29 years were recruited among university students. In-depth interviews were conducted, transcribed verbatim, and transcripts imported into NVivo12 for line-by-line analysis. Emerging codes were categorized under major constructs of the HBM. Condomless sex, having multiple sex partners, genital caressing and being uncircumcised were seen as susceptible exposure. Taking life-long treatment and stigma were perceived as severity. However, participants had no intent to circumcise in the near future even after acknowledging the severity. Hygiene, prevention of sexually transmitted infections including HIV were perceived as main benefits. Fear of pain was perceived as key barrier impeding adopting circumcision and seemed to outweigh the benefits for some participants. These findings will assist programme planners to review and promote VMMC services that will improve good health and well-being of young men to avert HIV new infections in Eswatini.