Introduction: Prostatic localization of actinomycosis is unusual.
Case report: We report the case of a 59 years-old diabetic man, hospitalised for a prostatic actinomycosis spontaneously fistulised in the rectum. Two species of Actinomyces were found in blood culture and in pus of the fistula.
Discussion: Therapeutic management including surgical treatment of the fistula and a specific antibiotherapy led to cure the prostatic infection due to Actinomyces.