Tubo-ovarian abscesses are usually caused by anaerobic bacteria alone or in mixed infection. Here, we report about a successfully treated 29-year-old patient with bilateral tubo-ovarian abscess caused by Pasteurella multocida. She had no exposure to animals. After the removal of a 1-year-old copper-T intrauterine device at the time of hospitalization, total abdominal hysterectomy and bilateral salpingo-oophorectomy were performed by laparotomy because of the level of the inflammatory lesion of both ovaries. After the administration of antibiotic combination, the patient was discharged home on the fifth postoperative day. In the setting of a tubo-ovarian abscess, rare zoonotic pathogens, such as P. multocida, should also be considered as a causative agent of the infectious process even in the absence of direct or indirect contact with animals. It seems that the asymptomatic colonization of the vagina and the intrauterine device with P. multocida may happen also from unknown origin of the environment with the consequences of severe pelvic infection with tubo-ovarian abscess formation.