Mary Katherine Horony Cummings (November 7, 1850 – November 2, 1940), popularly known as Big Nose Kate, was a Hungarian-born American outlaw, gambler, prostitute and longtime companion and common-law wife of Old West gunfighter Doc Holliday. "Tough, stubborn and fearless", she was educated, but chose to work as a prostitute due to the independence it provided her. She is the only woman with whom Holliday is known to have had a relationship.