The current risk of contracting a transfusion transmitted infections (TTIs) is unknown in Burundi. The aim of this study was to assess sociodemographic profiles of blood bank donors at Kamenge Teaching Hospital, the prevalence and associated risk factors of HIV, syphilis, HBV and HCV from 2015 to 2020. We conducted a cross-sectional study including all blood donors of Kamenge Teaching Hospital blood bank. During this study, 1370 blood samples were screened for HIV, Syphilis, HBV and HCV. We calculated prevalence of TTIs and performed logistic regression to know associated risk factors. Blood donors were males at 77% and 23% females. They were mostly students (54.2%). On screening, 83 blood samples (6.06%) were seropositive for at least one TTI. The overall prevalence rate of HIV, Syphilis, HBV and HCV among blood donors was 1.3%, 0.2% ,1.6%, 2.9% respectively. There was difference in distribution of the four TTIs among blood donors which is statistically significant (x2=33.997, ϱ-value<0.001). Private donors were associated with a high risk of syphilis and being a first-time donor was associated with a high HBV risk factor. The prevalence of TTIs found still to be high; mandatory and continuous screening is necessary.