Mar Youhannan Semaan Issayi (1914 -????? ????? ??????) ;1999)) was the Metropolitan Archbishop of Tehran of the Chaldean Catholics from March 16, 1971 until his death on February 7, 1999.
He was born in Sanandaj ?????, Kurdistan Iran on June 27, 1914 and ordained priest on March 3, 1940 and consecrated bishop on, October 22, 1967, in Iran.