Kathie Allardyce (née Ellwood; born c. 1961)[1] is a Canadian curler from Winnipeg, Manitoba.

Allardyce (then known as Kathie Ellwood) and her rink of Cathy Treloar, twin sister[2] Laurie Ellwood and Sandi Asham won the first of her two provincial titles in 1987,[3] defeating the defending champion Darcy Kirkness rink in the process.

[4] Her team then represented Manitoba at the 1987 Scott Tournament of Hearts, Canada's national curling championship.

At the Hearts, she led Manitoba to an 8-3 round robin record, which put her in first place, with a berth in the final.

[5] Allardyce with teammates Cathy Overton, sister Laurie and Jill Proctor won her second provincial title in 1991,[3] defeating former World Champion Connie Laliberte in the final of the 1991 Manitoba Hearts.