Documentation of the medicinal practices of a folk medicinal practitioner (FMP) was carried out in Kishoreganj town in Kishoreganj district, Bangladesh. The FMP was observed to use a total of 35 plants distributed into 26 families in his medicinal practice. Whole plants or various parts of these plants were used to treat ailments like gastrointestinal disorders, helminthiasis, asthma, gonorrhea, pain, snake bite, leucorrhea, spermatorrhea, skin disorders, bleeding from external cuts and wounds, testicular tumor, liver problems, excessive menstruation, hair loss, and diabetes. The plants used to treat testicular tumor and diabetes are of special interest for they can lead to new drug discoveries for treatment of these diseases.