In Indonesia, the burden of tuberculosis (TB) infection is significant, and there is likely a substantial link between TB and malnutrition. Anemia, which is linked to TB patient outcomes and length of hospital stay, is another issue that might aggravate the disease. This study aims to identify how common undernutrition and anemia are among tuberculosis patients at the Ulin Regional Hospital in Banjarmasin. A cross-sectional observational study was conducted using medical record data from 31 hospitalized tuberculosis patients during the period of September to December 2021. Data of weight, height, body mass index (BMI), Hemoglobin (Hb) and blood albumin level at admission were analyzed. The result shows that tuberculosis cases are mostly found in the male (61.3%) with the age of 20-60 years (83.9%). There were 42% patients with undernutrition (BMI 18.5), 93.5% with anemia and 71% had hypoalbuminemia. Rifampicin resistance was found in 38.7% of all patients with 58.3% being malnourished, 100% had anemia, and 50% had hypoalbuminemia. There was a possible link between tuberculosis and under nutrition. Therefore, screening, early diagnosis, and treatment for under nutrition, anemia, and hypoalbuminemia should be encouraged in patients with tuberculosis, whether susceptible or resistant to rifampicin, to lower the burden of the disease.