Listeria monocytogenes is a rare cause of bacterial meningoencephalitis in the non-immunocompromised pediatric population. On occasions, the absence of differential characteristics with other bacteria that cause meningitis delays diagnosis and hence treatment, worsening the prognosis.We present a case of a previously healthy, non-immunocompromised teenager who was admitted to hospital with meningitis caused by Listeria.We review the literature related to this case, noting the increasing incidence of this microorganism in the etiopathogenesis of meningoencephalitis, reason for which it has to be kept in mind in the differential diagnosis at the time of admission.