Background:Tuberculosis is an ancient disease observed during the Neolithic period and remains a serious problem in developing countries. Tuberculosis is a disease that can affect all age groups and all genders and can affect all organ systems in our body. Tuberculosis can affect most of the body's hematological parameters. TB affects hemoglobin levels, total number, red blood cell count, erythrocyte sedimentation rate, and platelet count, causing anemia, leukopenia or leukocytosis (extrapulmonary TB), thrombocytopenia, and increased ESR. Along with HIV, tuberculosis exacerbates the scenarios of thrombocytopenia, anemia, leukopenia, and pancytopenia. Aim: This study was done in NRI medical College Guntur to find out the haematological manifestation of pulmonary TB and to compare it with the hematological manifestation in HIV –TB co-infected patients.