The purpose of this prospective study is to describe a series of adult HIV-infected patients treated for peritoneal tuberculosis over a 36-month period in Lome, Togo. A total of 32 cases were included. Mean patient age was 38 years (range, 20 to 69). The M/F sex ratio was 0.52. Ascites with fever was observed in all cases. Ascitic fluid was exsudative in 10.6% of cases and lymphocytic in 93.7%. Peritoneal tuberculosis was isolated in 27 patients, associated with pleural involvement in 15.6 % of cases, hematological in 75% and hepatic in 21.9%. Patients responded poorly to therapy and prognosis was unfavorable with a mortality rate of 12.5%. HIV infection substantially alters the epidemiological, clinical and therapeutic profile of peritoneal tuberculosis.