A 29-year-old female presented with a brain abscess with subdural empyema in the left parafalcine region caused by Finegoldia magna. There was a partial clinical response to surgery and antibiotic therapy. An acute enfarctus developed after abscess drainage surgery in occipital lobe. We think that infarction developed due to transtentorial herniation and with the mass effect of brain abscess. F magna may be detected in many cases like soft tissue infections, septic arthritis, osteomyelitis, endocarditis and necrotizing pneumonia. Actually this is the first report of brain abscess in which F magna was found upon bacterial culture.