Objectives. To determine the factors associated with hemoptysis in patients with pulmonary tuberculosis admitted at Dos de Mayo National Hospital. Methods. Analytical study of cases and controls. Patients from the tuberculosis program at Dos de Mayo National Hospital, Lima- Peru, were selected. The cases were patients with pulmonary tuberculosis with hemoptysis, and controls pulmonary tuberculosis without hemoptysis. Epidemiological, clinical and laboratory variables were studied. SPSS 24 software is used. Frequency, central trend and dispersion measurements were determined, as well as odds ratios with their respective confidence intervals at 95%, the value of p<0,05 was considered statistically significant. Results. Tuberculosis hemoptysis account for 5,8% of all patients with pulmonary tuberculosis, 80% occurred in males under 60 years old. 70...