The study title was the mediating role of employee creativity and employee emotional conflict in the relationship between workforce diversity and organizational performance in Addis Ababa city administration. The main objective of the study was to examine the mediating role of employee emotional conflict and employee creativity in the relationship between work force diversity and organizational performance in Addis Ababa city administration. A quantitative research approach was used .The Research instrument used in conducting the research was questionnaire which was administered for randomly selected respondents from the employees of the city. The study sampled 371 employees out of a population of 5012 employees from three sub cities and one sector Bureau. The study used both primary and secondary data sources. A pilot test was conducted to ensure the reliability and validity of the measurements. Analysis of data was carried out through descriptive analysis and inferential analysis by using SPSS version 26 AMOS version 23 software. The findings of the study showed that: Workforce diversity has a significant positive effect on organizational performance; employee creativity partially mediates the relationship between workforce diversity and organizational performance. However, the findings of the study also indicated that emotional conflict does not mediate the relationship between workforce diversity and organizational performance. The study recommends that due to the diversified nature of the city, the city administration should deal more with the challenges of effectively managing the diversified work force.