Streptococcus agalactiae is a well-established cause of neonatal meningitis, whereas Acinetobacter baumannii, often seen as a contaminant, has only rarely been reported to cause meningitis without a neurosurgical predisposition. We report of a case of neonatal meningitis in a preterm neonate in which both S. agalactiae and A. baumannii were considered the pathogens. This case highlights the pathogenicity of A. baumannii, and suggests that it may be frequently underestimated.