Shafie Abdulkadir HassanMosab Nouraldein Mohammed Hamad2023-11-222023-11-222021https://ds.eaeu.edu.sd/handle/10.58971/428ABSTRACT Background: Based on the presence or absence of antigen A and B on the surface of red blood cells ABO blood groups are divided into A, B, AB and O blood group. In addition to the presence of D antigen Rhesus blood group is divided into Rhesus positive and Rhesus negative. The purpose of this study is to determine the frequency and distribution of both ABO and Rhesus blood types among students of Jamhuriya University students of Science and Technology. Results: This descriptive and cross-sectional study was conducted between April 2021 and June 2021. A total of 350 students including 255 males and 95 females took part in the study. The distribution of ages was between 16 and 47 years. The blood group O was the most common blood group (59.7%), subsequently blood group A (28.9%), then blood group B (9.2%) and AB (2.3%). Most of the participants were Rhesus positive (95.8%) while 4.2% were Rhesus negative. Conclusions: Blood group O was the most common blood group in the study, then A, B, and AB respectively. 95.8% were Rhesus positive; only 4.2% were Rhesus negative.other