Margaret Hilda Roberts; Margaret Hilda Thatcher (* Grantham, 1925 mara 13 uru Taypi sata phaxsin yuritayna - London, 2013 mara 8 uru Yapu apthapi phaxsin yuriwi),  jacha marka kimika, arxatiri & anakithiri. Gran Britaña Uma kamayuq (1979-1990).