Peritonitis is the most common complication of peritoneal dialysis. Peritoneal dialysis associated peritonitis caused by Delftia acidovorans has been reported only once in the literature before. Here, we present the second case of D. acidovorans peritonitis in a 60-year old male patient undergoing peritoneal dialysis. The patient was treated with intraperitoneal ceftazidim and oral ciprofloxacin, to which the organism was sensitive. The catheter was removed because of refractory peritonitis.