The purpose of the study was to investigate the relationship between employee engagement, organisational citizenship behaviour and employee performance among employees of Centenary Bank. The objectives of the study were; to examine the relationship between Employee Engagement and Organisational Citizenship Behaviour among employees of Centenary Bank; to determine the relationship between Organisational Citizenship Behaviour and Employee Performance among employees of Centenary Bank; to ascertain the relationship between Employee Engagement and Employee Performance among employees of Centenary Bank. The researcher used the correlational research design and the quantitative approach to the conduct the study. The study population comprised 250 employees of Centenary Bank who sit at the headquarters in Kampala City. A sample of 139 respondents (91.5% of the target sample of 152) was used. A closed ended self-administered questionnaire was used to obtain information from respondents. Data analysis was done using the Statistical Package for Social Sciences (SPSS).Frequency-percentage tables were used to analyse bio data while Pearson Correlation Coefficients (r) were used to test the three study hypotheses. The first findings indicated there are statistically significant positive relationships between; employee engagement and organisational citizenship behaviour (r = 0.684, p < 0.01); organisational citizenship behaviour and employee performance (r = 0.431, p < 0.01); and employee engagement and employee performance (r = 0.245, p < 0.05) among employees of Centenary Bank. Organisations need to establish job characteristics that are supportive to employee engagement as a well as awork environment that can promote exhibition of citizenship behaviours if they are to elicit and sustain high performance levels.