A trypanosome was seen on a blood film of a domestic pigeon (Columba livia) reared in Güneşli district of İstanbul in November. 1998. It was a single trypomastigote which is 55 µm long and had a well developed undulating membrane. The nucleus was placed marginally and the kinetoplast was away from the posterior end. This is the first case report on trypanosomosis (probably due to T. hannai) in a pigeon from Turkey.