Kathryn Jean Martin Sullivan AM (born 8 March 1942), Australian politician, was a Liberal member of the Australian Senate from 1974 to 1984, representing Queensland, and a member of the House of Representatives for the Division of Moncrieff, Queensland, from 1984 to 2001.
She previously held the record for the longest service in the Australian Parliament for a woman, topping the record previously held by Dorothy Tangney.
This record has since been surpassed by Bronwyn Bishop.
She was the first woman member of the parliament to have served in both houses.