Mirza Saeed Khan Ansari (Persian: میرزا سعید خان انصاری), or simply Sa'id Mo'tamen ol-Molk (Persian: سعید مؤتمنالملک) (1816 in Meyaneh (Ishlaq) – 1884 in Tehran), was the prime minister of Iran (Persia) during the Qajar dynasty under king Naser od-Din Shah Qajar between 1853 and 1873.[1] He is probably best known as a signatory of the 1881 Akhal Treaty.[2]