Kathleen Mary Josephine Leigh (née Beahan; 10 March 1881 – 4 February 1964) (other names included Kathleen Barry, and Kathleen Ryan) was an Australian underworld figure who rose to prominence as an madam, illegal trader of alcohol and cocaine, and running betting/gambling syndicates from her home in Surry Hills, Sydney, Australia during the first half of the twentieth century. Kate Leigh was a leading figure in the notorious Sydney razor gang wars. She was known for her continuing feud with fellow vice regal underworld figure Tilly Devine, a madam based at Woolloomooloo, as well as her acts of generosity for the unemployed during a repressive era and her wartime patriotism