The goal of this study was to investigate the impact of workforce diversity management on organisational performance in the context of Bule Hora University, Ethiopia with a particular emphasis on management of age, gender, ethnicity, educational background, cultural diversity, and religion diversity. Data from a sample of 362 people with a response rate of 97.2% was collected using a questioner to fulfil the study's goal. Self-administered questionnaires were used to collect primary data, while published articles, journals, and research documents were reviewed to gather secondary data. After that, the SPSS software version 26.0 descriptive was used to analyze the data. Inferential statistics were employed to show the link between the independent and dependent variables, and statistics like frequencies, means, standard deviations, and percentages were used to describe the sample. The results show that management of age diversity, gender diversity, ethnic diversity, educational diversity, cultural diversity, and religion diversity has a statistically significant relationship with organisational success. In order to demonstrate their commitment to diversity and inclusion, higher education institutions should have a clear policy that is communicated to all relevant parties including the general public.