As the Human Immunodeficiency Virus (HIV) prevalence rises, uninfected Basotho face an increased risk of exposure. This necessitates strengthening of strategies that prevent exposure, and where exposure has occurred, measures that prevent infection. One such measure is Human Immunodeficiency Virus (HIV) Post-Exposure Prophylaxis (PEP). Awareness and knowledge of HIV PEP is therefore of paramount importance. The purpose of this study was to assess knowledge, attitudes and utilisation of HIV PEP among adults in Roma, Lesotho. A quantitative cross-sectional study was conducted among 96 adult outpatients at St Joseph’s Hospital. Data were collected by means of structured questionnaire and analysed using SPSS version 23.0. Results were presented using charts and tables. Awareness of HIV PEP among the respondents was found to be very low and for most respondents’ knowledge of HIV PEP was either non-existent or very poor. Utilisation was also found to be very low. Attitudes towards HIV PEP were, however, found to be favourable. More studies should be conducted throughout the country to further explore Basotho’s knowledge, attitude and use of HIV PEP. / Health Studies / M.A. (Nursing Science)